If you are sitting A Level Biology, Chemistry or Physics as a private candidate, the practical endorsement is the thing most likely to stop you, and most people only discover it after they have started ringing round for a centre.

There is also a rule that almost nobody mentions, and it saves a lot of candidates a great deal of trouble: if you have sat the subject before and already hold a practical endorsement, you can usually carry it forward — even if it was awarded by a different exam board. If that applies to you, you do not need a centre with a laboratory at all.

Key Takeaways

• The practical endorsement is reported separately from your A to E grade, as a pass or not classified.

• It cannot be assessed through the written papers. A centre has to supervise and authenticate the work.

• A centre may only accept a private candidate entry if it is willing to provide the practical assessment. Many are not, which is why entries get refused.

• Resitting? You can request to carry forward a previous endorsement, including one from another board.

• We can deliver the endorsement at our centre in West Bromwich. A Level entries are £350 per subject.

What the practical endorsement actually is

A Level sciences have two separate outcomes on your certificate. One is the grade, A* to E, which comes entirely from the written papers. The other is the practical endorsement, which is recorded as a pass or as not classified, and does not affect the letter grade at all.

The endorsement covers the practical work the specification requires you to carry out: a defined set of experiments, written up and assessed while you do them. It is judged on whether you can actually work in a laboratory competently, which is why it cannot be inferred from an exam paper. Your written papers will ask you about practical methods, and that is a different thing.

The consequence is unavoidable: somebody has to watch you do the practicals. That somebody has to be a centre with laboratory facilities, a qualified assessor and the willingness to take on the paperwork.

Why centres turn private candidates away

AQA's guidance for private candidates is direct about where the responsibility sits. It is the candidate's job to find a centre, and that centre must accept responsibility for all aspects of the qualification. For non-exam assessment, the centre has to supervise the work, authenticate it, mark it, meet the administrative requirements in the specification, make the entry, and provide the room for the written exams.

Crucially, AQA states that a centre must only accept an entry from a private candidate if it is willing to do this. A centre cannot take your money for the written papers and quietly leave the practical side unresolved.

That is the honest reason so many centres say no to science candidates while happily taking History or Maths. Supervising a full set of practicals for one person is real staff time in a real laboratory, and for most exam centres — which are often a hall and an invigilator — it is simply not something they are set up to do.

What this means for you

Ask about the practical endorsement in the first thirty seconds of your first phone call to any centre, before you discuss dates, fees or anything else. If the answer is vague, treat it as a no and move on. A fortnight of ringing round is the usual cost of assuming it will be fine.

The carry-forward rule, which nobody tells you

This is the part worth knowing before you panic about laboratories.

If you are re-taking A Level Biology, Chemistry, Geology or Physics, AQA allows you to request that a previous practical endorsement result be carried forward — and explicitly says this applies even if it was awarded by a different exam board. So a student who passed the endorsement at school on one board, then missed the grade they needed, does not have to repeat the practical work to resit the papers.

In practice that means two quite different situations, and they need different centres:

• You have sat the subject before and passed the endorsement. You can carry it forward. Any centre that accepts private candidates for the written papers can take you, and your options open up considerably. Tell them at the point of entry that you are carrying forward, because it has to be requested.

• You have never sat the subject, or you were not classified. You need a centre that can deliver the endorsement. This is the group that gets turned away, and the group that needs to sort a centre early.

The same principle applies at GCSE for the English Language spoken language endorsement, which follows the same carry-forward rule.

Does it matter if you have no endorsement?

Sometimes, and it depends entirely on where you are going next.

Your A Level grade stands on its own. If you need a C in Chemistry for a course that does not care about the practical side, a not classified endorsement may cost you nothing at all.

But a good many science and medicine-related degree courses ask for a pass in the practical endorsement as a condition of entry, and some are strict about it. If you are applying for medicine, dentistry, veterinary science, or a laboratory-based science degree, check the specific entry requirements of the specific courses you are applying to, on their own admissions pages, before you decide to skip it. Policies differ between universities and change between cycles, so a forum answer from two years ago is not a safe basis for a decision that determines whether you need a laboratory.

If you are not sure, assume you need it. It is far easier to have it and not need it than to discover in February that you do.

Timing: why September and October matter for a summer sitting

A Level resits are summer only — there is no autumn series — so the exams are in May and June, and the board entry deadline is in February. That sounds like plenty of time.

The date that will actually stop you is the centre's, not the board's. Practical endorsement places are limited by laboratory time and staff, not by admin, so they are the first thing a centre runs out of. Places for a summer sitting are taken through the previous autumn.

The sensible order is: secure the centre first, then spend the intervening months preparing. Most people do it the other way round and find out in the new year that the nearest centre with a laboratory is ninety minutes away.

Sitting your science A Level with us

We are a tuition centre on Lodge Road in West Bromwich. We arrange exam entries for private candidates with AQA and OCR, and unlike most private centres we can deliver the A Level science practical endorsement.

Entries are £350 per subject. If you also want teaching, we run A Level in small groups with subject specialists, which means you can be prepared and examined in the same building rather than coordinating between a tutor and a separate exam venue.

The useful first step is not to decide everything. It is to tell us your subject, your board, and whether you have sat it before — from that we can tell you straight away whether you need the endorsement at all, and whether we can take you.

Frequently Asked Questions

Can I sit A Level Chemistry as a private candidate?

Yes, but only through a centre that will take responsibility for the whole qualification, including the practical endorsement if you need one. If you have passed the endorsement before, you can request to carry it forward and your choice of centre widens considerably.

Can I do the practical endorsement online or at home?

No. It has to be supervised and authenticated by a centre, in a laboratory. There is no remote or self-certified route, and any provider suggesting otherwise is not describing the real qualification.

Can I carry forward a practical endorsement from a different exam board?

Yes. AQA's guidance says a previous endorsement result can be carried forward when re-taking, even if another board awarded it. Request it when the entry is made rather than afterwards.

Will a university accept me without the endorsement?

It depends on the course. Many will, and some — particularly medicine, dentistry and laboratory sciences — will not. Check the admissions page of each course you are applying to, and do it before you decide you can go without.

Does the endorsement affect my A Level grade?

No. It is reported separately as a pass or not classified. Your A* to E grade comes from the written papers alone.

When should I contact a centre?

For a summer sitting, in the preceding autumn. Science places go first because they are limited by laboratory capacity.

Getting started

If you are in West Bromwich, Sandwell, Birmingham or the wider Black Country and you need a science A Level sat privately, get in touch with your subject, your exam board, and whether you have sat it before. We will tell you whether you need the practical endorsement, whether we can take it, and what it costs — and if the answer is that you can carry an endorsement forward and go elsewhere more easily, we will tell you that too.

Our companion post on resitting A Levels in 2027 covers the dates, deadlines and how entry works more generally.

Sources

• AQA, Private candidates: non-exam assessment, retrieved 2026-09-11, https://www.aqa.org.uk/student-and-parent-support/private-candidates/non-exam-assessment

• Joint Council for Qualifications, Private candidates, retrieved 2026-09-11, https://www.jcq.org.uk/private-candidates/

• OCR, Private candidates, retrieved 2026-09-11, https://www.ocr.org.uk/students/private-candidates/