Exam Tips & Strategies

Top 10 Toughest Exam in the World – Hardest Tests You Can Face

March 26, 2025
which is the toughest exam in the world
Quick Summary

Quick Summary

  • Discover the toughest exams in the world, ranked based on difficulty, pass rates, and competition.

  • Exams like UPSC, CFA, and Gaokao challenge millions with their extreme syllabus and low success rates.

  • Find out why these exams are so hard and how students prepare to crack them.

Table of Contents

Many students and professionals face challenging exams to achieve their dreams. Some exams are so difficult that only a small percentage of candidates can pass. In this article, we will explore the toughest exam in the world, highlighting what makes them so hard. If you are preparing for one of these exams, this guide will help you understand the competition and requirements.

What Makes an Exam the Toughest in the World?

Before we explore the list of hardest exams, let’s first understand what makes an exam the toughest exam in the world. There are several factors that contribute to the difficulty level of an exam:

  • Syllabus Complexity : The syllabus of the toughest exams is often vast and covers multiple subjects at advanced levels.
  • Low Success Rates : Many of these exams have extremely low pass rates, sometimes as low as 0.1%.
  • Intense Competition : Thousands or even lakhs of students compete for a handful of seats or positions.
  • Time Constraints : Candidates often have very limited time to answer complex questions.
  • Pressure of Stakes : These exams determine access to life-changing opportunities, adding immense psychological pressure.

Understanding these factors will help you appreciate why cracking the toughest exam in the world requires not just intelligence but also discipline, strategy, and resilience.

Top 10 Toughest Exam in the World

Exams are a crucial part of education and career-building. However, some exams are so challenging that only a small percentage of candidates pass them. These are known as the toughest exams in the world because of their difficulty level, vast syllabus, and intense competition.

  1. Gaokao Exam (China)
  2. UPSC Civil Services Examination (India)
  3. IIT JEE Advanced (India)
  4. CFA (Chartered Financial Analyst) Exam (Global)
  5. GRE (Graduate Record Examination) (Global)
  6. GATE (Graduate Aptitude Test in Engineering – India)
  7. Mensa IQ Test (Global)
  8. Master Sommelier Diploma Exam (Global)
  9. All Souls Prize Fellowship Exam (UK)
  10. CCIE (Cisco Certified Internetworking Expert) (Global)

This list ranks the top 10 toughest exams in the world, considering factors such as competition, pass rates, syllabus, and exam duration.

1. Gaokao Exam (China)

The Gaokao is the answer to your question “what is the toughest exam in the world”, first introduced in 1952, is widely regarded as one of the toughest exams in the world. This exam is for students who have completed their final year of high school and wish to enter college. The Gaokao is known for its extreme difficulty and high stakes, making it one of the toughest exams in the world. Every year, millions of students take the test, facing intense pressure to perform well and secure a spot at a prestigious university. Due to its complexity and impact on a student’s future, the Gaokao remains one of the world hardest test.

  • Subjects such as Science, Mathematics, Social Sciences, and Languages, including the Chinese language, constitute the exam.
  • Students do have the option to choose another international language as well.
CategoryDetails
Total Number of Students9.75 million annually (Source)
Difficulty Level of the ExamHigh
Duration and Format9 hours, conducted over 2-3 days
Pass RateLow
CompetitionHigh
Scope and Coverage of the ExamHeld annually in Mainland China. Subjects covered: Science, Math, Language.
Impact of the ExamTo get into top colleges in China

Why is Gaokao the Toughest Exam in the World?

  • Duration: The exam lasts 9 hours over two days, making it one of the longest academic tests.
  • Subjects Covered: Mathematics, Science, Literature, and English. Some students also take additional subjects depending on their major.
  • High Pressure: The scores determine admission to China’s elite universities like Peking University and Tsinghua University.
  • Pass Rate: Millions of students appear every year, but only a few score high enough to enter top institutions.
  • Mental & Physical Stress: Many students prepare for years, often studying 12-14 hours daily.

This high-stakes exam is a life-changing test for Chinese students, making it one of the toughest exams in the world.

2. UPSC Civil Services Examination (India)

The UPSC exams are for individuals who aspire to join the Civil Services in India, including roles such as IAS, IPS, and IFS. Known for its complexity and rigorous selection process, the UPSC exam is often considered one of the toughest exam in the world. Candidates must pass multiple stages, including a preliminary exam, mains, and an interview, each designed to test their knowledge, analytical skills, and decision-making abilities. Cracking the UPSC exam is a significant achievement, as it opens doors to prestigious government positions. For many, it remains one of the toughest exam in the world to conquer. The preparation to crack the UPSC exam could go on for years.

  • The aspirants must have a solid knowledge of History, Geography, General Sciences, Government, Social Development, and Economics.
  • The UPSC exam tests applicants primarily on these subjects, along with General Knowledge and communication skills.
  • The age limit for cracking this exam is between 21 to 32 years, leaving only a small window for aspirants to get through. The exam also comes with a limit on the number of attempts. One cannot attempt the exam more than 6 times(General) and 9 times(OBC).
CategoryDetails
Total Number of StudentsOver 11 lakh
Purpose of the ExamTo get into the field of Civil Services
Difficulty Level of the ExamHigh
Duration and Format3 hours, 2 MCQ type papers: General Studies Paper-1, General Studies Paper-2 (CSAT)
Pass Rate0.2%
Competition LevelHigh
Scope and Coverage of the ExamIndia
Impact of the ExamTo pursue careers in Civil Services

Why is UPSC CSE One of the Toughest Exam in the World?

  • Stages: The exam has three difficult stages – Prelims, Mains, and Interview.
  • Duration: The entire selection process takes over a year.
  • Vast Syllabus: Covers History, Geography, Polity, Economics, Science, Ethics, and Current Affairs.
  • Competition: Over 10 lakh candidates apply each year, but only around 1,000 qualify.
  • Pass Rate: Less than 1% of aspirants succeed, making it one of the toughest exams in the world.

The exam demands deep knowledge, analytical ability, and writing skills, making it the hardest government exam globally.

3. IIT JEE Advanced (India)

The IIT JEE is a standardized entrance exam in India for students aspiring to become engineers. Taken by students after completing their intermediate education, this exam is often considered one of the toughest exam in the world. The IIT JEE tests students’ knowledge and problem-solving abilities in subjects like physics, chemistry, and mathematics. It is known for its high level of difficulty and intense competition, making it another example of the toughest exam in the world. Success in the IIT JEE opens doors to India’s most prestigious engineering institutes, making it a crucial step for aspiring engineers.

  • The IIT JEE comes among the top 5 toughest exams in the world due to the high number of applicants competing for a handful of seats.
  • The IIT JEE exam mainly tests the technical skills of an aspirant. Mathematics, Physics, and Chemistry are the primary subjects in assessment.
CategoryDetails
Total Number of StudentsOver 11 lakh
Purpose of the ExamTo enter top colleges in the field of engineering
Difficulty Level of the ExamHigh
Duration and Format3 hours, 90 questions, 4 marks each
Pass Rate20-30% (Source)
Competition LevelHigh
Scope and Coverage of the ExamHeld annually in India in all states. Subjects covered: Physics, Chemistry, Mathematics, and Biology.
Impact of the ExamTo get into top graduate colleges in India

Why is JEE Advanced One of the Toughest Engineering Entrance Exam in the World?

  • Challenging Syllabus: Covers high-level Physics, Chemistry, and Mathematics.
  • Complex Questions: The exam includes advanced numerical problems and conceptual questions that test deep understanding.
  • Intense Competition: Over 10 lakh students appear for JEE Main, but only top 2.5 lakh qualify for JEE Advanced.
  • Limited Seats: Only 16,000-17,000 seats are available in IITs.

Due to the difficulty level and intense competition, JEE Advanced is one of the toughest exams in the world for engineering aspirants.

4. CFA (Chartered Financial Analyst) Exam (Global)

The CFA exam is widely regarded as one of the toughest exam in the world, particularly in the field of finance. Its rigorous structure and extensive syllabus make it incredibly challenging for candidates. In fact, some consider it the toughest exam in the world for those pursuing a career in finance. Accepted in over 100 countries, the CFA Certification opens doors to numerous career opportunities. In India, becoming a CFA can lead to high-demand positions in finance, investment, and management. Cracking this exam is a significant achievement, as it marks one of the hardest qualifications to earn globally.

  • There are 3 levels to the exam, and apart from these 3 levels, the aspirants should get a professional experience of at least 48 months to qualify for the third level.
  • The first 2 levels consist of objective-type questions, and the last is a subjective-type assessment.
  • Only aspirants having prior professional experience receive the CFA Charter.
CategoryDetails
Total Number of Students25,000
Purpose of the ExamTo qualify as a CFA Charter
Difficulty Level of the ExamHigh
Duration and Format6 hours, 240 questions
Pass Rate and Competition Level20% in Level 1 (Source)
Scope and Coverage of the ExamAll over India. Subjects covered include Economics, Financial Reporting and Analysis, and Portfolio Management
Impact and Importance of the ExamHigh importance for members who want to get into Finance

Why is CFA One of the Toughest Exam in the World?

  • Three Levels: The exam has three levels, each requiring 300-400 hours of study.
  • Pass Rate: The Level 1 pass rate is around 40%, and it declines further for Level 2 and Level 3.
  • Diverse Syllabus: Covers Economics, Ethics, Portfolio Management, and Quantitative Methods.
  • Time-Consuming: Most candidates take 4+ years to clear all levels.

With its low success rate and demanding syllabus, CFA is considered the toughest finance exam in the world.

5. GRE (Graduate Record Examination – Global)

The GRE is a widely recognized test that helps applicants qualify for a master’s degree, especially in the United States. It is often considered one of the toughest exam in the world due to its challenging format, which tests verbal reasoning, quantitative skills, and analytical thinking. Top universities like the Massachusetts Institute of Technology (MIT) require a high GRE score for admission, making it a crucial step for those aspiring to pursue higher education. For many students, the GRE is one of the toughest exam in the world, demanding intense preparation to achieve competitive scores for international academic opportunities.

  • Though the GRE was initially targeted at qualifying candidates for US universities, now the GRE is being accepted in more than 90 countries.
  • GRE measures Verbal Reasoning, Logical Reasoning, Quantitative Ability, Critical Thinking, and Analytical Writing.
CategoryDetails
Total Number of StudentsOver 11 lakh
Purpose of the ExamTo get into top colleges for MS across the world
Difficulty Level of the ExamHigh
Duration and Format3 hours 45 minutes
Pass Rate43%
Scope and Coverage of the ExamAcross the world
Impact of the ExamTo get into top global universities in Technology

Why is GRE One of the Toughest Exam in the World?

  • Exam Sections: The test consists of three major sections – Verbal Reasoning, Quantitative Reasoning, and Analytical Writing.
  • Complexity: The verbal section includes advanced vocabulary, sentence completion, and comprehension passages that require strong language skills.
  • Mathematical Challenges: The quantitative section demands a deep understanding of algebra, geometry, and data analysis, often with tricky problem-solving techniques.
  • Scoring System: The scoring is highly competitive, and securing a high percentile requires strategic preparation.
  • Acceptance Criteria: Many top universities have high GRE score requirements, adding to the pressure on candidates.

6. GATE (Graduate Aptitude Test in Engineering – India)

The GATE exam is an internationally recognized standardized test that assesses aspirants’ knowledge and aptitude in engineering and technical fields. It is often considered one of the toughest exam in the world due to its complex questions and high level of difficulty. To crack the GATE exam, candidates must undergo intense preparation, covering a wide range of topics in engineering. The exam tests both theoretical understanding and practical problem-solving skills. Because of its challenging nature, the GATE exam is regarded as one of the toughest exam in the world for those pursuing careers in engineering and technology.

  • Indian, German, and Singapore-based universities primarily accept the GATE exam considering the industry growth in technology in these countries.
  • The exam combines Aptitude-based Objective type answers, multiple-choice questions, and Numeric answers.
  • The subjects include engineering to life sciences.
CategoryDetails
Total Number of StudentsAlmost 10 lakh students
Purpose of the ExamTo get admission into IITs, IISC, IIITs, NITs, and other prestigious institutes
Difficulty Level of the ExamHigh
Duration and Format3 hours
Pass Rate18% (Source)
Scope and Coverage of the ExamIndia, Singapore, and Germany. Subjects covered include Aerospace Engineering, Chemical Engineering, Information Technology, and Computer Science Engineering
Impact of the ExamHigh importance for technical professionals

Why is GATE Considered One of the Toughest Exam in the World?

  • Extensive Syllabus: The exam covers the entire undergraduate engineering curriculum, including advanced mathematics and core technical subjects.
  • Conceptual Questions: Unlike simple memorization, GATE requires deep conceptual understanding and application-based problem-solving.
  • High Competition: Lakhs of students compete for a limited number of seats in IITs, IISc, and prestigious PSUs.
  • Challenging Exam Pattern: The exam includes multiple-choice questions (MCQs), numerical answer type (NAT) questions, and multiple select questions (MSQs), requiring precision and accuracy.

7. Mensa IQ Test (Global)

Mensa is an exclusive society for individuals with high intelligence and IQ, where members are in the top 2% globally, with an intelligence quotient of 98% or higher. Joining Mensa requires passing one of the toughest exam in the world, designed to assess logical thinking, reasoning abilities, and problem-solving skills. Applicants must demonstrate exceptional intellectual capacity, as the test challenges their cognitive abilities to the fullest. Due to its high standards, the Mensa entrance exam is often regarded as one of the toughest exam in the world. Success means being part of a prestigious group of highly intelligent individuals.

  • The test assesses the test takers’ Logic, Critical Thinking, Reasoning Ability, and Problem-Solving.
  • The age group for membership of Mensa ranges from 2 years to 100 years, as known. Those who qualify to be a part of Mensa belong to an elite community with an internationally high IQ.
CategoryDetails
Purpose of the ExamTo belong to an elite community of internationally high IQ
Difficulty Level of the ExamHigh
Duration and Format25 minutes, 35 problems
Pass Rate0.02%
Scope and Coverage of the ExamConducted in roughly 90 countries such as the US, UK, Ireland, and Germany
Impact of the ExamTo be a part of an elite community of IQ over 98%

Why is Mensa IQ Test One of the Toughest Exam in the World?

  • Extremely High IQ Requirement: To qualify, a candidate must score in the top 2% of the population on a supervised intelligence test.
  • Complex Logical Reasoning: The test evaluates problem-solving ability through pattern recognition, numerical puzzles, and abstract thinking.
  • No Formal Syllabus: Unlike academic exams, there are no books or courses to prepare for Mensa—success depends entirely on natural intelligence and logical reasoning.
  • Strict Time Limits: The test must be completed within a short time, adding to the difficulty level.

8. Master Sommelier Diploma Exam (Global)

The Master Sommelier Diploma Exam, conducted by the Court of Master Sommeliers (CMS), is widely considered one of the toughest exam in the world. It tests sommeliers on their expertise in wine, beverage service, and food pairing. This exam challenges candidates with in-depth knowledge of wine regions, tasting techniques, and pairing principles, making it one of the toughest exam in the world for those in the hospitality industry. Achieving this diploma requires years of training and dedication, as it is a prestigious qualification that marks a high level of proficiency in the art of wine and beverage service.

  • This exam is designed to ensure higher standards of knowledge on beverages and services in the hospitality industry. The success rate of this exam is only 10% success which aspirants receive after several retakes and reattempts.
  • The three test levels of this exam are service, theory, and blind tasting.
CategoryDetails
Total Number of Students70
Purpose of the ExamTo ensure higher standards of knowledge on beverages and services in the hospitality industry
Difficulty Level of the ExamHigh
Duration and Format50 minutes
Pass Rate5-10%
Scope and Coverage of the ExamTwice per year in the US and once yearly in the UK

Why is the Master Sommelier Exam One of the Toughest Exam in the World?

  • Extremely Low Pass Rate: Less than 10% of candidates pass all three levels of the exam.
  • Comprehensive Knowledge Required: Candidates must demonstrate expertise in global wine regions, grape varieties, winemaking techniques, and beverage pairing.
  • Blind Tasting Challenge: One of the hardest parts of the exam is blind tasting, where candidates must identify the wine’s region, grape variety, vintage, and producer by taste alone.
  • Service and Hospitality Skills: Candidates must excel in fine dining service, handling guest interactions, and wine recommendations.
  • Years of Dedication: Most Master Sommeliers take several years and multiple attempts to pass all stages of the exam.

9. All Souls Prize Fellowship Exam (UK)

The All Souls Prize Fellowship Exam, administered by Oxford University, is one of the toughest exam in the world. This historic examination has been conducted for decades and is known for its extreme difficulty. The exam is highly competitive, with only a few candidates selected for the prestigious 7-year fellowship. Due to its rigorous standards and the intellectual demands it places on applicants, the All Souls Prize Fellowship Exam is often regarded as one of the toughest exam in the world. Success in this exam is a rare and remarkable achievement, representing the pinnacle of academic excellence at Oxford.

  • The main subject put to the test here is the Humanities. The aspirants are asked to submit 2 essays on any topic, mainly in the Humanities.
  • Only students with a solid background in Humanities get to partake in this exam.
CategoryDetails
Total Number of Students80
Purpose of the ExamTo qualify for a 7-year fellowship
Difficulty Level of the ExamHigh
Duration and Format3 hours for 4 papers each
Pass Rate2.5% (Source)
Scope and Coverage of the ExamEnglish Literature, Philosophy, Politics, and Economics

Why is the All Souls Prize Fellowship Exam One of the Toughest Exam in the World?

  • Extremely Selective: The exam is conducted by the University of Oxford’s All Souls College, and only a handful of candidates are selected every few years.
  • Essay-Based Challenges: Candidates must write in-depth essays on abstract and philosophical topics, requiring strong critical thinking and originality.
  • No Fixed Syllabus: Unlike other competitive exams, this test does not have a fixed curriculum, making preparation unpredictable.
  • Time-Intensive Writing: Candidates must write four essays in just three hours, demonstrating deep intellectual ability under pressure.
  • Oral Examination: Those who clear the written exam must face an intense oral interview, where they are grilled by Oxford scholars on their knowledge and reasoning skills.

10. CCIE (Cisco Certified Internetworking Expert – Global)

The CCIE exam is designed for professionals who specialize in building and maintaining technology infrastructures. Often considered one of the toughest exam in the world, the CCIE requires candidates to demonstrate expertise in designing, implementing, and troubleshooting complex network systems. The exam consists of a series of tests that assess both theoretical knowledge and hands-on practical skills. Due to its difficulty and the level of expertise required, the CCIE is frequently regarded as one of the toughest exam in the world for those pursuing a career in network engineering. Successfully passing this exam opens doors to advanced career opportunities in the tech industry.

  • Mainly the CISCO engineers qualify to become a part of this exam. The high number of CISCO engineers and low qualification success rate make it one of the toughest test series to crack.
  • The exam comprises 6 tests assessing collaboration, routing, security, and other aspects. The difficulty level of the subject qualifies this as the hardest subject in the world.
CategoryDetails
Purpose of the ExamTo get into building technology infrastructures
Difficulty Level of the ExamHigh
Duration and Format2 hours, 6 series of tests
Pass Rate30% (Source)
Scope and Coverage of the ExamCISCO Engineers are tested on subjects including Network Infrastructure, Software Defined Infrastructure, Infrastructure Structure, and Services

Why is the CCIE considered the Toughest Exam in the World?

  • Highly Technical: The exam tests networking professionals on advanced Cisco technologies, requiring expert-level knowledge of networking protocols, security, and infrastructure.
  • Two-Part Examination: Candidates must clear a written qualification exam before attempting an eight-hour-long lab exam.
  • Practical Lab Challenges: The lab exam requires configuring, troubleshooting, and optimizing complex network setups in a real-time environment.
  • Low Pass Rate: Only a small percentage of candidates pass the CCIE exam, even after multiple attempts.
  • Expensive and Time-Consuming: The cost of preparation, lab equipment, and exam fees makes it a significant investment, with many candidates requiring months or even years of dedicated study.

These are among the toughest exam in the world due to their rigorous syllabus, high competition, and complex evaluation methods. Whether it’s academic excellence, professional expertise, or intelligence assessment, each of these tests challenges candidates to push their limits and prove their capabilities on a global scale.

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Comparison of Toughest Exams Key Stats

Here’s a comparison for the toughest exam in the world, focusing on their country/region, success rate, and number of applicants:

Exam NameCountry/RegionSuccess RateNumber of Applicants
Gaokao ExamChina~20% (varies by region)~10 million annually
UPSC Civil Services ExaminationIndia<1%~10 lakh annually
IIT JEE AdvancedIndia~0.56%~2.5 lakh (after JEE Main)
CFA (Chartered Financial Analyst) ExamGlobal~40% (Level III)~250,000 candidates globally
GRE (Graduate Record Examination)GlobalVaries by program/university~700,000 annually globally
GATE (Graduate Aptitude Test in Engineering)India~15%~10 lakh annually
Mensa IQ TestGlobal~2%N/A (conducted worldwide)
Master Sommelier Diploma ExamGlobal<10%Fewer than 1,000 attempts
All Souls Prize Fellowship ExamUKExtremely low (<1%)Limited to Oxford graduates
CCIE (Cisco Certified Internetworking Expert)Global~10%~10,000 attempts annually

Why Do People Attempt the Toughest Exam?

Despite the immense challenges, thousands of students attempt the toughest exam in the world every year. Here’s why:

  1. Prestigious Careers : Clearing these exams opens doors to lucrative and respected professions.
  2. Personal Growth : Preparing for such exams builds discipline, patience, and resilience.
  3. Social Recognition : Success in these exams earns admiration from family, friends, and society.
  4. Access to Opportunities : These exams provide access to world-class institutions and organizations.

How to Prepare for the Toughest Exam

Preparing for the world toughest exam requires a strategic approach. Here are some universal tips:

  1. Create a Study Plan : Divide your syllabus into manageable chunks and allocate time accordingly.
  2. Practice Regularly : Solve mock tests and previous years’ papers to identify strengths and weaknesses.
  3. Stay Consistent : Avoid procrastination and maintain a steady pace throughout your preparation.
  4. Seek Guidance : Consult mentors, teachers, or seniors who have successfully cleared the exam.
  5. Take Care of Health : Ensure adequate sleep, nutrition, and exercise to stay physically and mentally fit.

Conclusion

Cracking the toughest exam in the world is no small feat, but with determination and the right strategies, it is achievable. Whether you’re aiming for UPSC, JEE Advanced, or any other challenging exam, remember that perseverance is key. By understanding the difficulty factors, analyzing success stories, and implementing effective preparation techniques, you can increase your chances of success.

We hope this article has provided valuable insights into the tough exam in the world while addressing your queries comprehensively. Share this guide with fellow aspirants and embark on your journey toward excellence!

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Frequently Asked Questions (FAQs)

Q1. Which is the no. 1 toughest exam in the world?

The Gaokao (China’s National College Entrance Exam) is widely regarded as the toughest exam in the world due to its extensive syllabus, intense competition, and low acceptance rates.

Q2. Is Gaokao tougher than JEE?

Yes, the Gaokao is considered tougher than JEE due to its broader syllabus, longer duration (9 hours over multiple days), and higher competition levels.

Q3. Which is the 3 toughest exam in India?

The top 3 toughest exams in India are:

1. UPSC Civil Services Examination (for IAS, IPS, IFS roles)
2. IIT-JEE Advanced (engineering entrance exam)
3. NEET (medical entrance exam)

Q4. What is the world’s toughest- IB or IELTS exam?

While equally demanding, they stand at the same difficulty level. International Baccalaureate and International English Language Testing Systems are taken to assess the knowledge to apply internationally to universities. While for IB students, and universities exempt from IELTS, non-international board students do need to take IELTS to be accepted internationally. Difficulty levels of both are comparable.

Q5. What is the toughest exam in Asia?

The Gaokao is also known as the National Higher Education Entrance Examination. It is considered one of the toughest exam in Asia. It is China’s standardized college entrance exam and is known for its high difficulty level and intense competition. Over 10.7 million students participate in the exam every year.

Q6. Is NEET one of the toughest exam in the world?

Yes, NEET is one of the toughest exam in the world. It is highly competitive, with millions of students appearing for limited medical seats. The exam tests deep knowledge in physics, chemistry, and biology, requiring strong conceptual understanding, time management, and problem-solving skills to secure admission to top medical colleges.

Q7. Which is the toughest exam in the world as per guinness book?

There is no official recognition by the Guinness Book for the toughest exam in the world. Claims about such records are false.

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