An AI tutor is software that teaches and tests a student through conversation instead of only answering questions. For Cambridge Lower Secondary, CoreMark Coach is one example: a file you add to a Claude Project that teaches Stage 9 Maths, Science and Computing topics in Learn mode, then sets and marks exam-style papers in Exam mode.
CoreMark makes CoreMark Coach, the example used throughout. This page explains the category, and we say where Coach is limited.
Parents keep asking the same thing in different words: is an AI tutor just ChatGPT with a school logo, or is it something else? The honest answer is that the underlying technology is similar and the difference lies in what wraps around it. Below, we define the term, place it next to the other things a family might use, and walk through what one actually does.
What is an AI tutor, in one paragraph?
A program that uses a large language model to teach a topic, ask the student questions, check the answers and decide what to do next, rather than waiting for the student to ask. The word that matters is tutor: it works to a plan, where a general chatbot answers whatever it is asked.
A good one explains in small steps, asks the child to show their own thinking, corrects mistakes kindly and keeps track of what needs another look. A weak one is a chatbot with a friendly name. The test is whether it ever leads the session or only responds.
How is it different from a worksheet, a chatbot and a human tutor?
Each tool in the table does something the others do not, which is why many families end up using more than one.
| Tool | Answers "but why?" | Works to a plan | Marks your child's own working | Knows the Cambridge scope |
|---|---|---|---|---|
| Printed worksheet or PDF | No | Yes, fixed | No, you mark it | Depends on the author |
| General chatbot | Yes | Only if you write the plan | If you ask it to | Only if you tell it |
| AI tutor | Yes | Yes, built in | Yes, by design | If it was built for it |
| Human tutor | Yes | Yes | Yes | If they know the syllabus |
A human tutor can do things no software does, such as noticing that a child has gone quiet. We cover that honestly in AI tutor vs human tutor in India.
What is CoreMark Coach?
CoreMark Coach is an AI tutor for Cambridge Lower Secondary Stage 9 Maths, Science and Computing. It is one file per stage that you add to a Claude Project, from a parent's Claude account, and then your child types "hi". Coach was built as an extension of CoreMark's PDF boosters, so it uses the same summary-sheet rules, marking style and common-mistake notes, but talks back.
It runs only in Claude, which is made by Anthropic. CoreMark is not affiliated with Anthropic or with Cambridge. Coach covers Stages 7, 8 and 9 and launches for all three together; you can reserve a place on the Coach page. The step-by-step setup is in how to set up an AI tutor on Claude.
What does Learn mode do that a worksheet cannot?
Learn mode teaches one idea at a time and asks your child to explain it back. Coach opens with a map of the topic, shows a diagram when one helps, gives an everyday example from your child's world, states the rule in the wording examiners expect, and names the mistake most students make with it. Then it says "teach it back to me".
That last step matters most. If the explanation is vague or recited, Coach is designed to teach the idea again with a different example instead of repeating itself louder. A topic ends with a three-question check that carries no marks. The method behind it is explained in teach-it-back.
What does Exam mode do?
Exam mode sets exam-style practice and marks it afterwards. The sizes are a quick topic test, a longer practice paper or a full Checkpoint-style mock. Questions arrive one at a time with their marks shown, and a mock gives no hints. Only after your child submits everything does Coach mark, showing the worked solution, where method marks and accuracy marks were earned, and the first step that went wrong.
The report is grouped by idea rather than question number, so you see "co-interior angles confused with alternate angles" instead of a list of crosses. The full walk-through is in how CoreMark Coach works.
How can you tell a real AI tutor from a chatbot with a friendly name?
Use five tests, and apply them to any product, ours included. Each one can be checked in a short trial.
- It leads. After a topic, it proposes what comes next instead of waiting for a question.
- It asks your child to explain. If the student never has to put the idea into their own words, it is a lecture.
- It marks working, not just answers. Cambridge awards marks for method, so a tutor that only says right or wrong is missing the point.
- It stays in scope. A Stage 9 tutor should say when something belongs to a later qualification.
- It admits mistakes. Ask it to show its working on an answer you suspect is wrong. A trustworthy tool re-checks and says so when it slipped.
A sixth, softer test is whether you can read what happened. In Coach's case the chats sit in the parent's own Claude account, so you can look back through them.
Where does an AI tutor fit in Checkpoint preparation?
An AI tutor fits between lessons and exams, in the gap where a child meets a problem at home and nobody is free to explain. Stage 9 is the year most Cambridge schools prepare students for Checkpoint, and your child's school can tell you which tests are taken and when. Practice from any source, Coach included, is practice: it does not predict a Checkpoint band, because Checkpoint results are scaled by Cambridge from the real papers.
What a tutor can do is shorten the loop between getting something wrong and understanding why. That is a smaller promise than "better marks", and a more honest one. If you want the paper-based side of preparation, where to find past papers explains what is and is not publicly available.
What an AI tutor is not
An AI tutor is not a person and not a guarantee of marks, and CoreMark Coach is independent practice material that is not affiliated with Cambridge. Coach practice papers give raw marks, which are not a Checkpoint score; a real result is a 0 to 50 scaled score in six bands, explained in the Checkpoint grading guide. It can be wrong, which is why Coach is built to re-derive answers before marking a student wrong, and why we still suggest you check a few against a worked solution.
What does an AI tutor cost, and what else do you pay for?
Costs fall into three groups. General chatbots have free plans and paid ones, and you supply the tutoring instructions. Purpose-built tutors charge for the structure they add. Printed practice sits at the low end, and a free CoreMark booster lets you judge the style before you spend anything.
For CoreMark Coach, as of 20 October 2026, Stage 9 is ₹9,999 for the school year, paid once, with an early-bird price of ₹4,999 for the first 100 families. Coach is not free and there is no subscription. It runs inside a Claude account, which has its own plans; Anthropic's pricing page lists them, and the free plan has session usage limits that reset every five hours, so long mock papers may call for a paid plan.
Who is an AI tutor for, and who can skip it?
An AI tutor suits a Stage 9 student who understands the lesson in class but cannot explain it, or who gets answers wrong without knowing why. It also suits a parent who cannot sit and re-teach Science every evening. You can skip it if a tutor you trust already covers the same ground, if your child is not in Stage 9 yet, or if you prefer paper. The booster or Coach decision guide lays this out by situation.
The details, price and setup are on the CoreMark Coach page.
See how Coach works
CoreMark Coach is an AI tutor for Cambridge Lower Secondary Stage 9 that runs in Claude.
Frequently asked questions
An AI tutor is software that teaches a student through conversation: it explains a topic, asks questions, checks the answers and decides what to practise next. It differs from a plain chatbot because it works to a plan and leads the session, rather than only replying when asked.
Not exactly. ChatGPT is a general assistant that can be set up to tutor if you write the instructions. A purpose-built AI tutor, such as CoreMark Coach for Cambridge Lower Secondary Stage 9, comes with the plan already written: scope, modes, marking style and progress tracking. Both can make mistakes.
CoreMark Coach is the one we make, for Stage 9 Maths, Science and Computing. It runs in Claude from a parent's account. General tools such as ChatGPT can also be set up to tutor Cambridge Lower Secondary topics, but you write and maintain the instructions yourself.
No. An AI tutor adds practice, explanation and marking between lessons. It cannot read a child's mood, hold them accountable or know their school's chapter order unless you tell it. Many families use it alongside a teacher or tutor rather than instead of one.
As of 20 October 2026, Coach is ₹9,999 per stage for the school year, paid once with no subscription, with an early-bird price of ₹4,999 for the first 100 families. Each stage's file runs until the end of June. You also need a Claude account; Anthropic's pricing page lists its plans.
For Coach, no. Claude account holders must be at least 18 according to Anthropic, so the account is yours, and we recommend you sit in for the first few sessions. After that, how much supervision you keep is your call.
Sources & further reading
- Anthropic, "Minimum age requirement", Claude help centre, support.claude.com
- Anthropic, plans and pricing, claude.com, claude.com
- Anthropic, "Get started with Claude" (free-plan usage limits), Claude help centre, support.claude.com
- Anthropic, "What are projects?", Claude help centre, support.claude.com
- Cambridge Assessment International Education, "Cambridge Lower Secondary Checkpoint", cambridgeinternational.org
Last updated 20 October 2026. Details about other companies and research were checked against their own pages on 20 October 2026; check current terms, features and prices before you decide.
CoreMark Coach is an independent product that runs in Claude, made by Anthropic. CoreMark is not affiliated with Anthropic or with Cambridge Assessment International Education. AI can make mistakes: check important answers, and supervise your child's use.