Privacy policy
Effective October 15, 2026
Who we are
Teach Me 1600 is a free SAT practice app for students 13 and older, from the makers of Teach Me. It is run by Sati Hillyer, Walnut Creek, California. Questions about privacy go to [email protected].
Teach Me 1600 is not affiliated with or endorsed by the College Board. SAT is a trademark registered by the College Board.
You must be 13 or older
You make your own account, and you confirm you are 13 or older when you do. We do not knowingly collect information from anyone under 13. If we learn an account belongs to someone under 13, we delete it. A parent who thinks their child under 13 signed up can email us and we will delete the account.
What we collect
| What | Why |
|---|---|
| Your first name | To greet you in the app |
| Your email and a password (stored only as a one-way hash) | To sign you in on any device and, if you ask, send a password reset link |
| Your test date and score goal (both optional) | To show a countdown and your goal |
| Your answers, hints used, time per question, skill levels and projected score | To pick your next questions and show your progress |
| Feedback and notes you choose to send, with your browser type | To fix problems and improve the app |
| Usage events (for example "finished a set") and network address for short-term abuse limits | To keep the service working and secure, and to count usage in total |
We do not collect your last name, birthday, school, phone number, photos, location or contacts. We do not show ads, we do not track you across other sites, and we never sell, rent or share your personal information for advertising.
One cookie keeps you signed in, for up to a year. There are no tracking cookies. Your theme choice (light or dark) is saved in your browser only.
Who else handles the data
- Cloudflare hosts the app and its database.
- Anthropic writes the AI hints. AI is off for your account unless you ask us to turn it on. When it is on, we send the practice question and the answer you chose, so it can write a hint or explanation. After each set we send your score on that set and which skills you missed or needed hints on, so it can write a short note. We never send your name, email or any other personal detail. Hint text is cached for 14 days, so the same question is not sent twice. We count how many AI hints each account uses.
- Teach Me, our K–12 math site, only for shared sign-in, as described below.
- Resend delivers the email you ask for, such as a password reset link, to your address.
Your information is stored and processed in the United States. We will not share your personal information with anyone else unless you agree, or the law requires it.
Shared sign-in with Teach Me
Teach Me is our K–12 math site, run by the same operator. A student with a Teach Me student account (13 or older) can sign in here with the same email and password, and you can sign in to Teach Me with your Teach Me 1600 login. Teach Me parent accounts are never part of this.
- When it happens: only when you sign in on one site with an email that site does not have yet.
- What is sent: that site's server sends the email and password you typed to the other site's server, over an encrypted connection, only to check them. If they match, the other site sends back your first name (and, from Teach Me, your school grade), and nothing else. Your practice data, notes and settings stay on each site.
- What happens next: a new account is made on the site you signed in to, with the same email, your password stored as its own one-way hash, and your first name. You are asked to agree to that site's privacy policy before you go on.
- Passwords do not sync: after that the two accounts are separate. Changing or resetting your password on one site does not change it on the other, and deleting one account does not delete the other.
How long we keep it
We keep your information while you use the app. When you delete your account, we delete your progress, notes and usage history right away. Accounts with no activity for 12 months are deleted; if we can, we email you about a month before, and signing in keeps the account. Short-term security records, such as failed sign-ins, are cleared within minutes to days.
What you can do
- See it: your progress, skill levels and projected score are on your home screen.
- Change it: update your test date and goal under Account.
- Delete it: Account → Delete my account removes everything, or email [email protected] and we will do it for you.
If you live in California or another state with its own privacy law, you have the rights above plus any your state adds. We do not sell or share personal information as those laws define it.
Security
Passwords 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. Only the operator can see account records, and we look at them only to run the service, answer you, or fix a problem. If we learn your information was exposed, we will tell you by email.
About the projected score
The projected score in the app is an estimate built from your practice. It is not an official SAT score and is not reported to anyone.
Changes
If we change how we collect or use your information in a meaningful way, we will tell you in the app and ask you to agree again before it applies to you.