GCSE vs A-level: the difference, the jump in difficulty, how the grades and UCAS points work, how many subjects you take, the entry requirements, and how to choose A-level subjects from your GCSEs

GCSE and A-level are the two sets of exams that shape a student's path in England, Wales and Northern Ireland, and the question "what is the difference between GCSE and A-level" is asked by Year 11 students choosing sixth-form subjects, by parents who did their own schooling elsewhere, and by students who have just received GCSE results and want to know how much harder the next two years will be. This guide sets the two side by side, explains the jump in difficulty subject by subject, lists the entry requirements and the UCAS points, and gives a method for choosing A-level subjects from a set of GCSE results.

The two, side by side

What actually changes

Depth and volume. An A-level covers two to three times the content of its GCSE and expects a different kind of understanding: not "what is the formula" but "why, and what happens when the conditions change". The maths A-level, for instance, starts with topics that were the hardest at GCSE (surds, indices, quadratics, trigonometry) and treats them as the warm-up.

The questions. GCSE papers are mostly short, structured questions with the method signposted. A-level papers ask fewer, longer questions that combine topics and are set in unfamiliar contexts; in essay subjects a single answer can be 45 minutes and three sides.

Independence. At GCSE the teacher covers everything in lessons. At A-level the lesson introduces the idea and the student is expected to do the reading, the practice and the consolidation alone, four to five hours a week per subject outside class. The students who struggle in Year 12 are usually those who did well at GCSE by listening in class and never learned to work alone.

Linear exams. Everything from two years is examined at the end of Year 13, so retention matters in a way it did not at GCSE, where mocks and revision were compressed into Year 11.

Choice. Three or four subjects that the student chose, which is both the pleasure of sixth form and the risk: a subject chosen because a friend took it, or because the GCSE was easy, becomes two years of difficulty.

The jump, subject by subject

Entry requirements

Sixth forms and colleges publish their own, and they vary, but the pattern is:

• To enter sixth form at all: usually five GCSEs at grade 4 or above (some ask for 5s), including English language and maths.
• To take a subject at A-level: usually a grade 6 in that subject at GCSE, with 7 common for maths and the sciences, and 8 or 9 for further maths. Where there was no GCSE in the subject (economics, psychology, politics), a 6 in a related subject (maths for economics, a science for psychology) is typical.
• Selective and grammar sixth forms: an average across all GCSEs of 6, 7 or higher.

A student below the requirement can usually still enrol at the sixth form with a different subject, or at a college that sets lower requirements; the question to ask is not "can I get in" but "can I cope with the jump in this subject", and the GCSE grade is a fair predictor.

How to choose A-levels from your GCSEs

1. Start from the university course or career, if there is one. Medicine needs chemistry and usually biology; engineering needs maths and physics; economics at a top university needs maths; law, history and English have no required subjects but value essay A-levels. The Russell Group's "Informed Choices" guide lists what each degree expects.
2. Take the subjects you were best at and liked, in that order. A 9 in a subject the student disliked is a worse A-level choice than a 7 in one they read about for fun.
3. Balance the type of work. Three essay subjects is a reading load; three sciences plus maths is a problem-set load; a mix is easier to sustain.
4. Respect the grade 7 rule for maths and the sciences. A 6 in GCSE maths and A-level maths is a known cause of Year 12 unhappiness; with a tutor from the summer it can work, but go in with eyes open.
5. Do not choose a fourth A-level unless it is further maths or the sixth form expects it. Three good grades beat four mixed ones.

The summer between GCSE and A-level

The students who start Year 12 well are the ones who did two things in the summer: read the first few chapters of each A-level textbook (most sixth forms issue a transition booklet or reading list), and, for maths and the sciences, worked through the "bridging" material on the GCSE topics the A-level assumes: algebra, indices, surds, quadratics, trigonometry, and for chemistry the mole. Six to eight hours a week for six weeks is enough. Our guide to what a grade 9 is explains the GCSE grades sixth forms read, and the GCSE exam dates 2027 post has the results-day and enrolment dates.

For families from abroad

GCSE sits at roughly CBSE Class 10 standard in maths and science; A-level maths covers much of CBSE Class 11 and 12 maths, A-level chemistry and physics overlap heavily with Class 11 and 12, and a student who did well in Class 12 from India usually finds A-level content familiar but the question style (longer, applied, unstructured) new. Our UK tutoring pages set out the courses.

Where a tutor helps

Two moments: the summer bridge for maths and the sciences, and the first term of Year 12, when the jump lands. Our A-level and GCSE classes are 1-on-1 with master's-qualified teachers on the student's own board, from about £8 to £10 an hour for GCSE and £9 to £10 for A-level, every class recorded; the A-level maths tutors and A-level science tutors pages have the detail, and the first class is free.

Questions parents ask

See how we teach this, 1-on-1 online →