Globally, you will find millions of students preparing for tests that can influence their academic journeys and future career paths.
Some exams simply measure basic understanding. On the other hand, some exams require years of preparation and the ability to perform under extreme pressure.
If you are aiming for prestigious institutions or specialised careers, certain exams act as important gateways.
These highly competitive tests often require deep subject knowledge, consistent preparation, and mental resilience.
This blog discusses the top 10 toughest exams in world. Read to understand the basic attributes of these exams if you are planning to study or build a career in India or abroad.
What Makes an Exam the ‘Toughest’ in the World?
Just because an exam offers limited attempts, does that make it one of the hardest exams in the world?
Not necessarily.
There are several factors that help in determining the difficulty level of the exam. These include the breadth of the syllabus and the multiple stages of examination.
The reasons that make an exam the ‘toughest’ in the world are as follows:
Pass Rate or Success Ratio
The exams have a pretty low pass rate owing to cut-throat competition and very few available seats.
Huge Syllabus
Exams that require you to complete a huge syllabus for various subjects and their topics. Preparing for these exams takes years of preparation.
Outcome Value
Tests that provide access to very prestigious career paths are generally designed to be competitive.
Top 10 Toughest Exams in World
The world’s toughest exams test your full strength, both physically and mentally. The success rate of these exams is low, and sometimes, you have to wait an entire year to be able to re-appear for the test again.
The table below gives a detailed explanation of the top 10 toughest exams in world:
Gaokao: China’s National College Entrance Exam
| Category |
Details |
| Purpose |
Determines admission to undergraduate programmes in Chinese universities. |
| Exam Format |
Conducted once a year over two days (about 9 hours total). Students are tested in Chinese language, Mathematics, a foreign language, and science or arts subjects. |
| Reasons for Difficulty |
Millions of students compete for limited seats. The questions require deep analytical thinking, and less than 1% secure seats in top universities, creating intense pressure. |
JEE (Advanced): Joint Entrance Examinations (Advanced)
| Category |
Details |
| Purpose |
Selects students for undergraduate engineering programmes in the Indian Institutes of Technology (IITs). |
| Exam Format |
Two stages: JEE Main and JEE Advanced
Tests knowledge in Mathematics, Physics, and Chemistry with concept-based questions. |
| Reasons for Difficulty |
Over 15 lakh students take JEE Main each year, but only the top candidates qualify for JEE Advanced, thus securing admissions to the IITs. The exam requires deep conceptual understanding and years of preparation. |
UPSC Civil Services: Union Public Service Commission Exams
| Category |
Details |
| Purpose |
Recruits bureaucrats for prestigious services such as:
Indian Administrative Service (IAS)
Indian Police Service (IPS)
Indian Foreign Service (IFS)
Indian Revenue Service (IRS) |
| Exam Format |
Three stages: Preliminary exam, Mains (descriptive papers), and Interview covering subjects like history, geography, polity, economy, science, and current affairs. |
| Reasons for Difficulty |
Extremely wide syllabus, a year-long examination process, and a selection rate below 0.2% make it one of the toughest exams globally. |
CFA: Chartered Financial Analyst Exam
| Category |
Details |
| Purpose |
Certifies professionals for careers in finance, investment management, and portfolio analysis. |
| Exam Format |
Three exam levels focusing on finance, ethics, and investment management. Each level requires 300–400 hours of study. |
| Reasons for Difficulty |
Complex financial topics, a multi-level exam structure, and low pass rates (around 20–50% per level). |
GRE: Graduate Record Examination
| Category |
Details |
| Purpose |
Required for admission to several Master’s and Doctor of Philosophy (PhD) programmes, especially in the United States and other countries. |
| Exam Format |
Computer-based test evaluating Quantitative Reasoning, Verbal Reasoning, and Analytical Writing skills. |
| Reasons for Difficulty |
Requires strong time management, analytical ability, and high scores to gain admission to top universities. |
LNAT: Law National Aptitude Test (UK)
| Category |
Details |
| Purpose |
Used by top UK universities to select students for undergraduate law programmes. |
| Exam Format |
Includes reading comprehension, reasoning questions, and an essay section that evaluates critical thinking and writing ability. |
| Reasons for Difficulty |
No fixed syllabus, requiring strong reading, reasoning, and analytical writing skills. Competition for top law schools is also very high. |
USMLE: United States Medical Licensing Exam
| Category |
Details |
| Purpose |
Required for doctors who wish to practice medicine in the United States. |
| Exam Format |
Three main steps: Step 1, Step 2 CK, and Step 3 conducted, testing medical knowledge, clinical skills, and patient care decision-making. |
| Reasons for Difficulty |
Requires mastering extensive medical knowledge and balancing preparation with clinical training over a long period. |
GATE: Graduate Aptitude Test in Engineering
| Category |
Details |
| Purpose |
Used for admission to postgraduate engineering programmes and recruitment in public sector companies (PSUs) in India. |
| Exam Format |
Tests Mathematics, general aptitude, and core engineering subjects through analytical and concept-based questions. |
| Reasons for Difficulty |
Lakhs of students appear every year, but only about 15% qualify, and fewer achieve the ranks required for top institutes or PSU jobs. |
Mensa IQ Test
| Category |
Details |
| Purpose |
Identifies individuals with exceptionally high intelligence for Mensa membership. |
| Exam Format |
Tests logic, pattern recognition, and problem-solving ability without a predefined syllabus. |
| Reasons for Difficulty |
Only the top 2% of test-takers qualify, and preparation is difficult due to the absence of a fixed syllabus. |
Master Sommelier Diploma Exam
| Category |
Details |
| Purpose |
Certifies professionals as expert wine specialists in the hospitality and beverage industry. |
| Exam Format |
Includes blind wine tasting, service evaluation, and theory tests covering wine regions, production, and service techniques. |
| Reasons for Difficulty |
Requires years of practice and detailed knowledge of wines, with a pass rate below 10%, making it one of the most exclusive professional exams. |
Tips to Succeed in the World's Toughest Exams
There is no universal “secret formula” for cracking the most competitive exam in the world.
The most important thing is to know what your strengths are and the factors that influence your motivation levels. This will help you to devise your preparation strategies according to your level of learning.
The following are some of the tips that can help you crack the most difficult exam in the world:
Develop a Daily Study Routine
Passing difficult exams takes time and hard work. Revise your notes on a regular basis, and write assignments in detail. You can also use mock tests or past question papers to solidify your knowledge and understand areas where you need to improve.
Get Your Materials Ready in Advance
Prepare all your exam materials the night before. Having the relevant materials prepared, such as stationery, identification, and requisite documents, will help alleviate anxiety and make the day start more smoothly.
Prioritise Quality Sleep
When the brain is well rested, it works more efficiently during exams. Sleeping well enhances problem-solving, retention and concentration. You can manage exam-related stress well and keep your mind alert during lengthy exam sessions.
Eat a Healthy Breakfast
A healthy breakfast helps you stay more focused and energetic. Adding complex carbohydrates and protein to your meals can help you stay focused during exams. You should also stay hydrated to keep your mind clear.
Reach the Exam Venue Early
Coming early allows you to calm down and focus your mind on the exam. It helps you to arrange your materials, familiarise yourself with the environment and enter the exam hall with a relaxed and concentrated attitude.
Wrapping Up
Taking some of the hardest exams in the world can be very challenging at times. You must have the right mindset, a solid academic background, and skills that showcase your aptitude.
These competitive exams may pave the way for great career opportunities, but it all starts with the right institution that you choose to pursue higher education from.
Institutions emphasising academic excellence, real-world learning, and international exposure can help you nurture the skills necessary to succeed in such a competitive environment.
Universities such as JAIN (Deemed-to-be University), with its industry-oriented programmes and vibrant academic ecosystem, offer you the knowledge, mentorship, and opportunities to ensure a robust future.
FAQs
Q1: Which exam is the toughest in the world?
A1: As of 2025, the Gaokao, China’s National Higher Education Entrance Examination, is widely regarded as one of the toughest exams in the world.
Taken by millions of students each year, it assesses knowledge across multiple subjects. The exam is known for its intense competition, high academic expectations, and significant pressure on students.
Q2: Which are the 2 toughest exams in India?
A2: The UPSC Civil Services Examination and IIT-JEE (especially JEE Advanced) are often considered the toughest exams in India due to their vast syllabi, extremely low selection rates, and intense competition.
Q3: How can I prepare well for difficult exams?
A3: Preparing for tough exams requires consistent study habits, early preparation, and regular practice through mock tests. Maintaining a healthy routine, proper sleep, and staying resilient after setbacks also play a key role in long-term success.
