Contact

Questions, corrections or a test that isn’t working? Email is the way to reach us.

Please mention the page or test you’re writing about. We don’t use a contact form, so your message goes straight to our inbox.

What to include

Most messages fall into one of these. A clear subject line helps us find yours.

A score looks wrong

Tell us which test, your device and browser, and what happened. A screenshot of the result helps us reproduce it.

Subject lineScore problem

A number or a source

Name the page and the number you’re unsure about. If you know a better or newer source, send the link.

Subject lineSource

Working together

For partnerships, classroom use or press, tell us who you are, where you’re based and what you have in mind.

Subject linePartnership