China's national college entrance examination β the Gaokao β has a reputation that precedes it almost everywhere people discuss competitive academic testing. It's been called the hardest exam in the world, the most consequential two-day test in any student's life, and a defining institution of Chinese society. But how hard is it actually β and hard compared to what?
The honest answer is: it depends on what you mean by "hard." The Gaokao is demanding in scope, high-stakes in consequence, and exhausting in preparation. But the nature of its difficulty differs from what Western students typically encounter in their own high-stakes exams, and understanding those differences gives a clearer picture of what the exam actually involves.
This guide explains the Gaokao's structure, what makes it difficult, how it compares to exams like the SAT or A-levels, and what students do to prepare for what many Chinese families consider the most important test of their children's lives.
The Gaokao (ι«θ, literally "high exam" or "university entrance examination") is a standardized national exam taken by high school seniors across China, typically in June each year over two to three days. It's been the primary mechanism for university admission in China since 1977, when it was reinstated after a 10-year suspension during the Cultural Revolution.
Approximately 12β13 million students take the Gaokao annually β a staggering number that dwarfs every other standardized exam in the world. For context, roughly 4β5 million students take the SAT in a given year in the United States.
The standard Gaokao includes three mandatory subjects and one elective group:
Total possible score: 750 points. Scoring varies by province; different regions use slightly different scoring systems and difficulty levels, which is itself a significant source of inequality and debate within China.
In 2017, China began implementing reforms to move some provinces to a new system ("3+3" model) where students choose three subjects from Physics, Chemistry, Biology, History, Geography, and Politics to supplement the three mandatory subjects. Implementation is ongoing and varies by province.
The Gaokao's difficulty isn't primarily about individual question complexity, though some questions β especially in advanced mathematics β are genuinely demanding. What makes it hard is the combination of breadth, competition, and stakes.
Breadth of content. Chinese students spend three years in high school (grades 10β12) covering the full scope of what will be tested. The curriculum is comprehensive β students studying the science track will need to master material roughly equivalent to completing a first-year university course in physics, chemistry, and biology by age 18. The humanities track demands similar depth across history, geography, and political theory. All of this is tested in a single exam.
Intense competition for limited seats. China's top universities β the 985 Project universities, and especially Peking University and Tsinghua University β admit a tiny fraction of applicants. Admission to these schools requires scoring in roughly the top 0.1% of all Gaokao takers nationally, though exact cutoffs vary by province and year. Most students aren't aiming for those peaks, but even mid-tier university admission is competitive in the most populous provinces.
Zero-mistake pressure. Because the exam is a one-shot, two-day event β not a score you can take multiple times and superscore like the SAT β the psychological pressure is enormous. A single bad morning can change the trajectory of a student's education. That pressure is real, and it's part of why Gaokao preparation is so all-consuming in Chinese secondary school culture.
Mathematics difficulty. The mathematics section of the Gaokao is substantially harder than the math on the SAT or ACT. Gaokao math covers topics not typically assessed in equivalent US tests: parametric equations, polar coordinates, number theory, and proof problems that require multi-step reasoning. For students on the science track, the math portion can be the most punishing part of the exam.
Context helps. The Gaokao is one of several major national university entrance exams worldwide, and comparing it to others illuminates what makes it distinctive.
Gaokao vs. SAT (US) β The SAT is a 3-hour exam covering reading, writing, and math. Students can take it up to several times and submit only their best score. Score ranges from 400β1600. SAT scores are one factor among many in US college admissions, alongside GPA, extracurriculars, essays, and recommendations. The Gaokao is a 2β3 day exam that is often the sole factor in Chinese university admission. It's incomparably more high-stakes.
Gaokao vs. A-Levels (UK) β British A-levels are subject-specific qualifications taken over two years (AS and A2), typically in 3 subjects. They're more specialized than the Gaokao but also multi-attempt and modular. UK university admission considers predicted grades, references, and personal statements. The Gaokao tests a broader curriculum in a single sitting.
Gaokao vs. Suneung (South Korea) β South Korea's College Scholastic Ability Test (CSAT/Suneung) is the closest parallel to the Gaokao in terms of stakes and cultural weight. Both are single, high-pressure national exams that dominate secondary school preparation. South Korea's college admission process is similarly exam-focused. The Gaokao is larger in scale but structurally similar in its role.
Gaokao vs. JEE/NEET (India) β India's Joint Entrance Examination (engineering) and NEET (medicine) are highly competitive specialized entrance exams. JEE Advanced, the gateway to IITs, has pass rates under 10% of applicants. These exams are arguably harder on a per-question basis but cover narrower subject areas than the comprehensive Gaokao.
Gaokao preparation is a national undertaking. Chinese students begin orienting their education toward the exam as early as middle school, but the intensity peaks dramatically in the third year of high school (senior 3, or ι«δΈ). During that year, it's common for students to study 12β15 hours per day, including evenings and weekends.
Schools run intensive review programs throughout the final year, and most students also attend evening tutoring sessions or online prep programs. Families reorganize their lives around the exam schedule. In many households, the third-year student is exempt from household chores, social obligations, and anything else that might reduce study time.
Practice exams are central to Gaokao preparation. Students work through past official papers extensively, practicing under timed conditions to build both knowledge and exam strategy. The volume of past papers available makes this approach practical β decades of official exams exist as study materials.
The difficulty of any exam isn't just about its content β it's about what's at stake if you fail. The Gaokao carries weight that's hard to fully communicate to someone outside Chinese educational culture.
Parents take days off work on exam days. Some cities reduce traffic near testing centers to minimize disruptions. Teachers and students track score releases the way stock traders watch markets. The two or three days of testing represent the culmination of twelve years of formal education, and the score determines not just which university you'll attend but often your career field, earning potential, and social standing.
Students who score poorly β or who simply don't reach their goals β often experience profound disappointment, family pressure, and in the most severe cases, mental health crises. Chinese educational authorities and schools increasingly acknowledge this dimension and provide psychological support resources around exam season.
That said, the picture is evolving. Wealthy families are increasingly sending students abroad for university, bypassing the Gaokao for international pathways. Some provinces have reformed admissions to include interviews and secondary criteria. And a growing number of Chinese students are using the Gaokao score as a floor β qualifying for domestic admission while also applying to schools overseas.
The Gaokao is a mirror of Chinese educational philosophy and social priorities. It values comprehensive knowledge over specialized depth (you must be competent in multiple subjects, not just brilliant in one). It values memorization and procedural mastery alongside reasoning β Chinese education has traditionally emphasized rigor and repetition as learning tools. And it values equality through standardization β a single national exam is one mechanism to ensure that a student from a rural province has the same formal opportunity as a student from a wealthy urban family, even if the reality of preparation resources doesn't always match that ideal.
If you're studying the Gaokao β whether as a student preparing to take it, a researcher studying educational systems, or someone interested in one of the world's most significant annual academic events β the Gaokao practice tests here cover the core content areas tested on the exam. Working through practice questions is how students everywhere learn to apply knowledge under pressure, and that principle holds whether you're facing the SAT, the Suneung, or the exam that 13 million students take every June in China.