Top 20 Toughest Courses In The World in 2026
With little bit of hard work, nothing is tough!
Table of Content
- 1. Subject Complexity
- 2. Study Intensity
- 3. Teaching Methodology
- 4. Evaluation Techniques
- 5. Foundational Requirements
- 6. Admission Exams
- Top 20 Toughest Courses in the World
- 1. Medicine
- 2. Engineering (Mechanical/Electrical/Chemical)
- 3. Architecture
- 4. Law
- 5. Chartered Accountancy
- 6. Quantum Mechanics
- 7. Neuroscience
- 8. Aerospace Engineering
- 9. Psychology (Clinical)
- 10. Pharmacy
- 11. Mathematics
- 12. Physics
- 13. Chemistry
- 14. Philosophy
- 15. Economics
- 16. Dentistry
- 17. Veterinary Medicine
- 18. Data Science
- 19. Civil Services Preparation
- 20. Artificial Intelligence
Ever feel mentally overloaded after hours of studying? Think your current coursework is hard? Wait a minute, because we are revealing the top hardest courses in the world! The list includes Medicine, which has a typical dropout rate of 18.4%, Quantum Mechanics, which has a total acceptance rate of only 22.23%, and Philosophy, where more than 42% of students drop out. The list of the toughest in the world might even make you say, "Well, maybe organic chemistry wasn't that bad after all!"
These are not just challenging programs; they are also globally acknowledged as some of the hardest degrees to get. Some are often described as the most difficult degrees in the world, while others are considered among the most challenging courses globally, depending on the field and region.
What Makes a Course Difficult?
Understanding the toughest in the world may have a significant influence on a student's academic career. Several factors influence students' learning experiences and outcomes, including the perceived difficulty of the course they're aiming to pursue.
1. Subject Complexity
The complexity of the hardest degrees in the world and their alignment with prior knowledge significantly affect performance. Programs filled with abstract theory and technical depth often become difficult.
2. Study Intensity
Heavy assignments, lab work, research papers, and internships turn many programs into the toughest degrees in the world.
3. Teaching Methodology
Courses requiring independent research and analytical reasoning are often called the hardest university courses in the world by students.
4. Evaluation Techniques
Frequent exams, thesis defence, practical assessments, and viva examinations increase pressure when appearing for some of the toughest exams in the world.
5. Foundational Requirements
Without strong basics, any program can become a difficult degree in the world.
6. Admission Exams
Highly competitive entrance tests filter students for the hardest degrees in the world.
Top 20 Toughest Courses in the World
1. Medicine
Dropout rate: 18.4%
Acceptance rate: 3–4%
Subjects covered: Anatomy, Physiology, Biochemistry, Pharmacology, Pathology, Clinical Rotations
Medicine is consistently ranked among the hardest degrees in the world.
Why is it hard?
It is often considered the hardest medical degree in the world because students handle life-or-death situations while mastering vast theory.
Average Salary (all salaries are in USD) after Medicine
$120,000–$250,000
Top countries to study Medicine
USA, UK, Germany, Australia
2. Engineering (Mechanical/Electrical/Chemical)
Dropout rate: 15–25%
Acceptance rate: 5–15%
Subjects covered: Advanced Mathematics, Thermodynamics, Circuit Systems, Structural Mechanics
Why is it hard?
Often called the hardest engineering degree in the world, engineering combines complex math, physics, and practical design. It ranks among the hardest degrees in the world in STEM.
Average Salary (all salaries are in USD)
$85,000–$150,000
Top countries
USA, Germany, Japan
3. Architecture
Dropout rate: 20%
Acceptance rate: 10–20%
Subjects: Design Studio, Structural Systems, CAD
Why is it hard?
Long studio hours and project submissions make it one of the most difficult and toughest degrees in the world, creatively.
Salary (all salaries are in USD)
$70,000–$120,000
Countries
UK, USA, Italy
4. Law
Dropout rate: 18–22%
Acceptance rate: 6–12%
Subjects: Constitutional Law, Criminal Law, Corporate Law
Why is it hard?
Extensive reading and competitive bar exams make Law one of the toughest bachelor's degrees in the world in the humanities.
Salary (all salaries are in USD)
$90,000–$200,000
Countries
USA, UK
5. Chartered Accountancy
Dropout rate: 40–60%
Acceptance rate: Extremely competitive
Subjects: Auditing, Taxation, Financial Reporting
Why is it hard?
Low pass percentages make CA the most toughest course in the world in commerce streams.
Salary (all salaries are in USD)
$80,000–$180,000
Countries
India, UK
6. Quantum Mechanics
Dropout rate: 30%
Acceptance rate: 20–22.23%
Subjects: Wave Theory, Schrödinger Equation
Why is it hard?
Abstract mathematics makes it one of the hardest university course in the world in physics.
Salary (all salaries are in USD)
$95,000–$160,000
Countries
USA, Germany
7. Neuroscience
Subjects: Brain Biology, Cognitive Science
Why is it hard?
A cross-disciplinary program ranked among the hardest degrees in the world in medical research.
Salary (all salaries are in USD)
$90,000–$170,000
Countries
USA, UK
8. Aerospace Engineering
Dropout rate: 18–25%
Acceptance rate: 8–15%
Subjects covered: Aerodynamics, Propulsion Systems, Flight Mechanics, Avionics, Structural Dynamics
Why is it hard?
Aerospace Engineering is frequently ranked among the hardest degrees in the world because it demands mastery of advanced physics and engineering precision. Many academics consider it the hardest engineering degree in the world, while others classify it as a top hardest degree in the world in technical education. Designing aircraft and spacecraft requires near-perfect calculations, making it one of the toughest in the world.
Average Salary (all salaries are in USD) after Aerospace Engineering
$100,000–$180,000 per year
Top countries to study Aerospace Engineering
USA, Russia, Germany, France
9. Psychology (Clinical)
Dropout rate: 15–20%
Acceptance rate: 10–18%
Subjects covered: Cognitive Psychology, BehaviouralScience, Clinical Diagnostics, Research Methods
Why is it hard?
Clinical Psychology is often described as a difficult degree in the world because it combines research, therapy training, and emotional resilience. Many universities rank it among the most difficult in the social sciences. The long path to licensing makes it one of the hardest degrees in the world in the mental health field.
Average Salary (all salaries are in USD)
$75,000–$150,000 per year
Top countries
USA, UK, Australia, Canada
10. Pharmacy
Dropout rate: 10-15%
Acceptance rate: 20–30%
Subjects covered: Pharmacology, Medicinal Chemistry, Toxicology, Clinical Pharmacy
Why is it hard?
Pharmacy is considered one of the toughest bachelor degree in the world in healthcare because accuracy is critical for patient safety. The laboratory rigour and regulatory standards place it among the hardest degrees in the world in applied medical sciences.
Average Salary (all salaries are in USD)
$100,000–$140,000 per year
Top countries
USA, UK, Canada, Australia
11. Mathematics
Dropout rate: 20–30%
Acceptance rate: 10–20%
Subjects covered: Real Analysis, Abstract Algebra, Topology, Probability
Why is it hard?
Pure Mathematics is widely recognised as one of the hardest degrees in the world and is often debated as the hardest degree in the world in theoretical academia. Its proof-based learning system makes it one of the most difficult degrees in the world for logical thinkers.
Average Salary (all salaries are in USD)
$90,000–$150,000 per year
Top countries
USA, France, Russia, UK
12. Physics
Dropout rate: 25–35%
Acceptance rate: 8–15%
Subjects covered: Quantum Physics, Thermodynamics, Electromagnetism, Astrophysics
Why is it hard?
Theoretical Physics is frequently labelled the hardest university course in the world because of its abstract mathematics and conceptual difficulty. It is among the most difficult and is often compared to the hardest academically.
Average Salary (all salaries are in USD)
$95,000–$160,000 per year
Top countries
USA, Germany, UK, Switzerland
13. Chemistry
Dropout rate: 20–28%
Acceptance rate: 15–25%
Subjects covered: Organic Chemistry, Inorganic Chemistry, Physical Chemistry, Analytical Techniques
Why is it hard?
Chemistry combines intensive lab work with deep theory, making it one of the most difficult in laboratory sciences. Many institutions classify it among the hardest degrees in the world in the pure sciences.
Average Salary (all salaries are in USD)
$85,000–$140,000 per year
Top countries
USA, Switzerland, Germany, UK
14. Philosophy
Dropout rate: approx 40–42%
Acceptance rate: 20–30%
Subjects covered: Logic, Ethics, Metaphysics, Political Philosophy
Why is it the hardest course in the world?
Philosophy is often regarded as one of the most difficult intellectually because of abstract reasoning and argumentative writing. Some scholars even argue it qualifies as the most difficult degree in the world in the humanities.
Average Salary (all salaries are in USD)
$70,000–$120,000 per year
Top countries
UK, Germany, USA
15. Economics
Dropout rate: 18–25%
Acceptance rate: 10–20%
Subjects covered: Econometrics, Microeconomics, Macroeconomics, Statistical Modeling
Why is it hard?
Economics requires advanced quantitative modelling, which places it among the hardest degrees in the world in social sciences. Its mathematical depth makes it one of the toughest in the world for commerce students.
Average Salary (all salaries are in USD)
$85,000–$160,000 per year
Top countries
USA, UK, Singapore, Germany
16. Dentistry
Dropout rate: 10–20%
Acceptance rate: 5–10%
Subjects covered: Oral Surgery, Periodontology, Dental Anatomy, Prosthodontics
Why is it hard?
Dentistry combines surgical precision with academic theory. It is frequently compared to the hardest medical degree in the world and is considered the world's toughest degree course in healthcare training.
Average Salary (all salaries are in USD)
$120,000–$220,000 per year
Top countries
USA, Australia, Canada
17. Veterinary Medicine
Dropout rate: 15–25%
Acceptance rate: 10–15%
Subjects covered: Animal Anatomy, Veterinary Surgery, Pathology, Microbiology
Why is it hard?
Veterinary Medicine is recognised as one of the toughest degrees in the world in medical sciences because students must treat multiple species. It is also considered the hardest bachelor degree in the world in animal healthcare.
Average Salary (all salaries are in USD)
$95,000–$150,000 per year
Top countries
USA, UK, Australia
18. Data Science
Dropout rate: 15–20%
Acceptance rate: 15–25%
Subjects covered: Machine Learning, Statistics, Python Programming, Big Data
Why is it hard?
Data Science integrates mathematics and programming, making it one of the hardest degrees in the world in modern technology. Many students consider it a tough degree in the world due to coding intensity.
Average Salary (all salaries are in USD)
$110,000–$180,000 per year
Top countries
USA, Canada, Germany, Singapore
19. Civil Services Preparation
Dropout rate: Extremely high (selection rate below 1–3%)
Acceptance rate: Highly competitive
Subjects covered: Public Administration, History, Political Science, Economics
Why is it hard?
Due to intense competition and low success rates, Civil Services is often described as the most toughest course in world in terms of competition. It is also seen as one of the most difficult degree in the world career pathways.
Average Salary (all salaries are in USD)
Varies by country and rank
Top countries
India, UK, France
20. Artificial Intelligence
Dropout rate: 15–22%
Acceptance rate: 10–20%
Subjects covered: Deep Learning, Neural Networks, Algorithms, Linear Algebra, Reinforcement Learning
Why is it hard?
Artificial Intelligence is rapidly becoming one of the hardest degrees in the world in modern academia. It blends mathematics, coding, and data modelling. Many consider it the toughest degree in the world in tech, and one of the toughest in the world today.
Average Salary (all salaries are in USD)
$110,000–$200,000 per year
Top countries
USA, Canada, UK, Singapore
Frequently Asked Questions
What course is by far the hardest to study in the whole world?
Medicine has always been considered the most challenging course worldwide given the incredibly limited number of students accepted, the high rate of students dropping out, and, most importantly,doctor duties that involve life-or-death situations.
Which degree do people call the most difficult to get in the whole wide world?
Degrees such as Medicine, Quantum Mechanics, and Chartered Accountancy are the ones that are most often known to as the hardest degrees in the world.
How can a program be counted as one of the toughest in the world?
The main reasons for which a program is regarded as one of the toughest in the world are the complexity of the subject, very long hours spent studying, very competitive entrance examinations, and very strict grading systems.
Is Engineering listed as one of the hardest degrees in the world?
A lot of people think that Engineering, most specifically Mechanical, Electrical, and Aerospace, is the hardest engineering degree in the world, because of the use of very advanced math and physics.
What new-age tech degree is giving the top hardest degree courses in the world a run for their money?
The degree programs in Artificial Intelligence and Data Science are nowadays climbing up the charts of the toughest degrees in the world because they are a combination of mathematics, coding, and sophisticated analytics. These courses are in demand at both the easiest and hardest universities to get into in the UK.