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Privacy notice

Markr is a GCSE maths practice tool run by Aaron Godwood. Students practise on it, and maths tutors use it to set and mark work for the students they teach. This page explains, in plain English, what Markr keeps about you, why, who can see it, and how to get it deleted. If you are a parent or guardian of a student using Markr, this page is for you too.

Last updated 16 October 2026

Who is responsible for your data

Aaron Godwood runs Markr and is responsible for your account and the practice you do on it. In data protection terms that makes me the controller. You can contact me about anything on this page at hello@markrmaths.com.

If a tutor has added you to Markr as their student (a tutee), your tutor is responsible for the homework they set you and what they do with it, such as your marks and their feedback. They are the controller for that, and Markr looks after it on their behalf under the data processing terms. Questions about how your tutor uses your work are best asked to them, but you can always contact me as well.

What Markr stores

Your account: your email address, the name you give (it can be a first name or nickname), your password (stored scrambled, so no one can read it, including me), whether you are a student, a tutee or a tutor, and which courses you can use.

Your work: the answers and working you type or draw into practice questions, papers and homework; whether each answer was right; marks and comments on homework; and when you did it. This is what builds your progress page.

Tutoring links: if you are a tutee, which tutor you are linked to and the work they have set you. If you joined through a tutor's join link, Markr records that you joined them.

Reports: if you report a problem with a question, Markr keeps your report, the question as you saw it and your answer to it.

Tutors: the questions, worksheets and lesson plans you create, and your list of students.

Markr does not ask for your address, phone number, date of birth, school or photos, and you should not type personal details into answer boxes.

Why it is stored

  • To let you log in and keep your work between visits.
  • To mark your answers and show your progress by topic, so you know what to practise next.
  • For tutees: so your tutor can set homework, mark it, give feedback and plan lessons around what you need.
  • To fix mistakes in questions when someone reports them.
  • To keep Markr working and secure, for example resetting a forgotten password or checking who a new tutor account belongs to before it opens.

The legal basis for this is providing the service you signed up for (and, for tutees, the tutoring your family has arranged with your tutor). I do not use your data for anything else.

Who can see it

  • You can see your own work and progress.
  • Your tutor (if you are a tutee) can see your name, the homework they set you, your answers to it, and your progress, including which practice questions you have answered. Markr doesn't show them your email address (though if they set up your account, they typed it in). If they remove you, they stop seeing new work, but keep what you handed in to them.
  • Other tutors can see questions and worksheets a tutor has made, unless the tutor keeps them private. They never see students or their work.
  • Whoever wrote a question sees reports about it, labelled only as coming from "a student" or "a tutor", never with your name.
  • Aaron Godwood, as the person who runs Markr, can access all accounts in order to support and maintain it.
  • No other student can see your work, your name or your email.

Your data is never sold, shared with advertisers, or used to show you adverts. Markr has no adverts.

Services Markr uses

A small number of companies store or process data on Markr's behalf, under their own data protection terms:

  • Supabase: the database that stores accounts and work, and handles logins. It is stored in the EU (Frankfurt).
  • Vercel: hosts the website. It also counts page visits without cookies and without identifying you.
  • Resend: sends account emails such as confirming your email address or resetting your password. These are the only emails Markr sends.

Some of these services may store data outside the UK. Where they do, they are required to protect it to the standard UK data protection law expects.

Cookies and your browser

Markr does not use cookies for tracking or advertising. It keeps your login and a few display settings (such as which sections you have expanded) in your browser's storage so it works properly. Logging out removes your login from the browser.

How long it is kept

Your account and work are kept while you use Markr. If you ask for your account to be deleted, it and all your work are removed within 30 days, including any reports you made. Accounts that have not been used for two years are deleted.

If your tutor removes you, your account carries on as an ordinary student account with your own practice in it, unless you ask for it to be deleted. If a tutor closes their account, the work they set and your answers to it are deleted within 30 days.

Your rights

You can ask me to:

  • send you a copy of the data Markr holds about you;
  • correct anything that is wrong;
  • delete your account and everything in it;
  • stop using your data for any purpose you object to.

Email hello@markrmaths.com from the address on your account, or ask a parent or guardian to. I will reply within one month. If your request is about homework a tutor set you, I may pass it on to them, as they are responsible for it.

If you are not happy with how your data has been handled, you can complain to the Information Commissioner's Office (ICO) at ico.org.uk, though I would appreciate the chance to put it right first.

Younger students

Markr is designed for secondary school students preparing for GCSE maths. If you are under 13, please ask a parent or guardian before creating an account. Tutors who add a student under 13 must have their parent or guardian's agreement.

Changes to this notice

If this notice changes in a way that affects you, the date at the top will change. If the change is significant, I will let you know, for example by email or with a message in Markr.