Privacy policy
Effective 2026-10-15 · updated 2026-11-04 (AI hints on for every account, with no personal information sent; separate consent for Ask and test photos; every service provider listed; download your data). See also how long we keep data and how we protect it.
Who we are
Teach Me is a math practice app for kindergarten through 12th grade. It is run by Sati Hillyer, Walnut Creek, California, under the name Teach Me Anywhere. Questions about privacy go to [email protected].
Parents set up the account for children
A parent or legal guardian creates the family account and agrees to this policy before any child uses the app. Children never sign up, never type an email address, and are never asked for personal details. We ask parents for as little as we need to run the app.
Students 13 and older can sign up themselves
A student in grades 7 to 12 who is 13 or older may make their own student account instead. They confirm they are 13 or older and agree to this policy when they sign up. Anyone under 13 needs a parent account; we do not knowingly let anyone under 13 make a student account, and if we learn one belongs to someone under 13 we delete it. A student account has one learner, the student. It has no parent PIN, no other children and no rewards.
What we collect and keep
| What | From whom | Why |
|---|---|---|
| Parent email address and a password (stored only as a one-way hash) | Parent | To sign in on any device and to reach the parent about the account |
| Each child's first name, school grade and a picture choice (a cartoon critter, or their initials in a colour) | Parent | To show the right child's profile and start at the right level |
| A student account: the student's first name, school grade, email address, a password (stored only as a one-way hash) and a picture choice | The student (13 or older) | To sign in on any device, greet the student and start at the right level |
| Rewards the parent types in | Parent | To show the child what they are working toward |
| Answers, hints used, days practiced and levels passed | Created as the child or student practices | To pick the next problems and show progress to the parent, or to the student |
| Parent PIN (stored only as a one-way hash) | Parent | To keep grades, rewards and settings away from children |
| School test results: the date, the test's title, and how many problems were right per skill | Parent, optional | To put the skills a child missed at school first in practice and show whether they improved |
| Feedback and thumbs up or down, with the browser type | Parent or child, optional | To fix problems and improve the app |
| Usage events (for example "opened the app", "finished a day") and network address for short-term abuse limits | Created automatically | To keep the service working and secure, and to count usage in total |
| A count of AI hints and test photo reads per family per month | Created automatically when AI is on | To keep AI use within limits |
We do not collect photos of children, voice, location, contacts, school names, last names or birthdays. A parent may photograph a graded school test to have it read. That photo goes to Anthropic for reading and is not stored. Only the per-skill results are kept. We do not show ads, we do not track children across other sites, and we never sell or rent personal information.
A sign-in cookie keeps the parent signed in on that device for up to one year. It holds a signed family id and nothing else. Signing out removes it.
Who else handles the data
We only share personal information with these service providers, only so they can run their part of the app, and they may not use it for anything else:
| Company | What it does | What it gets |
|---|---|---|
| Cloudflare | Hosts the website, the app and its database | Everything stored in the app (listed above), and the network address of each visit |
| Anthropic | Runs the AI | See "AI" below |
| Resend | Sends our emails | The parent's or student's email address and the text of the email (password resets, the warning before an inactive account is deleted, and one reminder the day after sign-up if no first day was finished) |
| "Continue with Google", only if you choose it | Nothing from us. Google tells us your email address, that it is verified, and your first name. Parents and students 13 and up only. | |
| GitHub | Runs the operator's weekly summary email | Parent and student email addresses of new and quiet accounts, in that summary only. Nothing about children. |
We will not share a child's personal information with anyone else unless a parent gives separate consent, or the law requires it.
AI
AI comes in two parts:
- Hints and reading passages, on for every account. For a hint, Anthropic receives the problem, its answer and the answer the child typed. After a set, it receives the score and which skills were missed. New reading passages are written from the grade and skill only. None of this includes a name, an email, an id or anything else that identifies the child, so it is not a child's personal information. To turn hints off for your family, email us.
- Ask and test photos, with separate consent. These can carry personal details, so they stay off until the parent turns them on under Family settings › AI help, and the parent can turn them off there at any time. Ask sends the text typed into it; before it leaves, we remove the child's name, email addresses, phone numbers, links and street addresses. A parent's Ask also sends a short summary of that child's practice (grade, scores, skills). A test photo is sent as it is, so cover the name before taking it; we do not keep the photo. For children under 13, the kid's Ask chat and test photos also need a one-time check that the person agreeing is the parent (for example a short video call or a signed form). Students 13 and older agree for themselves.
Under Anthropic's commercial terms, Anthropic does not use this data to train its models. Hint text is kept by us for 14 days so the same problem does not need a new hint; it holds the problem, never who asked.
Teach Me 1600 accounts (moved here on 2026-10-26)
Teach Me 1600 was our SAT practice site, run by the same operator. On 2026-10-26 the SAT practice moved into Teach Me and every Teach Me 1600 account moved with it: the same email, the same password (its one-way hash, never the password itself), the student's first name, and their SAT progress. Nothing else was copied. There is no longer any sharing of sign-ins between sites. Teach Me 1600 keeps a read-only archive of its old records until it is shut down; deleting your Teach Me account deletes the moved copy here. Students who had a Teach Me 1600 account are asked to agree to this policy the first time they sign in here.
For a hint on an SAT question, Anthropic receives the question, its passage and choices, and the student's answer, the same way as for a math problem, and nothing about who the student is.
How long we keep it
We keep a family's information while the account is in use. When a parent deletes the family, we delete every child's profile, progress, rewards, feedback and usage history right away. Accounts with no activity for 12 months are deleted, after a warning email 30 days before, unless you delete yours sooner. Activity logs and feedback older than 2 years are deleted even on active accounts. Short-term security records, such as failed sign-ins, are cleared within minutes to days. The full schedule is in our data retention policy.
What parents can do
- See everything: the Parents area shows each child's name, grade, rewards and progress. Family settings › Your data › Download my data gives you every record we keep as one file.
- Change it: edit a child, rewards, username, password or PIN at any time under Family settings.
- Delete it: Family settings → Delete family and all data removes everything. You can also remove a single child.
- Say no to AI features: Family settings › AI help turns Ask and test photos off. Hints send nothing personal and are on for everyone; to turn them off for your family too, email us.
- Students with their own account: see your progress on your home screen, change your email and password under Account, and delete everything with Account → Delete account.
- Stop collection: deleting the family stops all further collection. You can also email [email protected] and we will do it for you.
Security
Passwords and PINs are never stored in readable form. The app is served only over encrypted connections, sign-in attempts are rate limited, and only the operator can reach the admin console. The database is private to the app and cannot be reached from the internet. Only the operator can see family records, and we look at them only to run the service, answer a parent, or fix a problem. If we learn that family information was exposed, we will tell affected parents by email. Our full security program is published.
Changes
If we change how we collect or use children's information, we will ask parents to agree again before the change applies to their family.