There's no single "most difficult" study, as difficulty is subjective, but Medicine, Engineering (especially Aerospace/Biomedical), Law, and Physics/Astrophysics consistently rank as the hardest due to intense, broad knowledge requirements, complex problem-solving, and high responsibility/workload. Fields like Chartered Accountancy, Architecture, Chemistry, and Neuroscience are also cited for their challenging concepts, practical skills, and demanding study hours.
15 Hardest Degrees in the World
Here's a complete list of the hardest degrees globally based on the methodology we explained above:
The most difficult majors require extensive study time, more STEM courses, and a solid foundation in math. Chemistry, engineering, and physics are generally considered some of the hardest college majors available to undergraduates.
Experts have put medicine, engineering, design, mathematics, law, physics, chemistry, music, biology, and computer science at the top of the list of the hardest degrees in the world. Each of these fields needs a high level of academic and practical skills, as well as a strong work ethic and a commitment to the field.
Psychology
A bachelor's in psychology ranks among the easiest majors. You can develop skills that apply to varying careers in counseling or marketing. As you complete your undergraduate psychology degree, you'll take classes such as human development, psychology theories, and research in the psychology field.
Physics involves a lot of mathematical equations and formulas, which you'll use to analyze and understand various physical phenomena. On the other hand, if you're more interested in memorizing facts, understanding life processes, and analyzing complex systems, biology might be more up your alley.
Architecture. Architecture is known as one of the degrees that leads to the highest mental burnout due to its intense studio culture, long working hours, and demanding design expectations. Students often spend nights completing models, drawings, and critiques, which can lead to stress and exhaustion.
Top 20 Hardest Degrees in the World
1. Precision Production. Only 28 students graduated in 2020-21 with a degree in Precision Production—and only 12 in 2021-22. This area of study focuses on giving students technical knowledge and skills to work on certain products such as mattresses, furniture, automobile seats, and others.
The top 10 hardest degrees in the world commonly include: (1) Medicine, (2) Engineering (various branches), (3) Chartered Accountancy, (4) Architecture, (5) Physics, (6) Aerospace Engineering, (7) Chemical Engineering, (8) Law, (9) Pharmacy, and (10) Mathematics.
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Average College Dropout Rates
The average dropout rate for first-time first-year college students is 19.0%. The computer science major has the highest dropout rate of 10.7%, while the advertising major has the second-highest dropout rate at 7.7%.
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There's no single "number 1" university, as rankings vary by methodology, but the Massachusetts Institute of Technology (MIT) consistently ranks first in the QS World University Rankings 2026, known for its strength in science, engineering, and innovation. However, the University of Oxford is ranked #1 by Times Higher Education (THE) for 2026, highlighting differing criteria.
Degrees like Medicine, Engineering, and Architecture are stressful due to long hours and high responsibility, while Creative Arts and Design can be stressful because of subjective grading and constant performance pressure.
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STEM degrees, especially in engineering, computer science, and mathematics, lead across all key employment metrics, offering low unemployment rates, high starting salaries, and long-term demand. Healthcare fields also rank highly, with nursing topping the list due to its exceptional job security and national demand.
While depression can arise in any job or career, research has shown that some of the most depressing careers include social workers, disability lawyers, long-term care administrators and nurses, mental health counsellors, and first responders.
The "42% rule" for burnout suggests dedicating roughly 42% of your day (about 10 hours) to rest and recovery activities like sleep, hobbies, exercise, and socializing to prevent mental and physical exhaustion, countering the "always on" culture that leads to burnout. It's a science-backed guideline emphasizing that sustainable success requires balancing intense work with sufficient downtime for your brain and body to recharge, not just a quick nap.
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Musk says physics teaches you to think from first principles. Huang even said that if he were a student today, he wouldn't study computer science, he'd study physical sciences, because the next wave of AI will be about mastering the real world, not just writing code.
The hardest degree subjects are Aerospace Engineering, Law, Chartered Accountancy, Architecture, Chemistry, Medicine, Pharmacy, Psychology, Statistics, Nursing, Physics, Astrophysics, Biomedical Engineering, Astronomy, and Dentistry.
At A-level, a score of 40% usually falls on the boundary for a grade E, which is the minimum passing grade. However, grade boundaries can vary depending on the subject, the difficulty of the exam in a particular year, and the overall performance of students.