> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://support.altr.com.au/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# How to request an invite when your school is already signed up.

If you try signing up to ALTR only to find that your school is already registered, simply click on the 'Request Invite' button and your school principal will receive a request to invite you to join the account. Once they approve that request**,** you will receive an invitation you can accept to join ALTR.


Related reading: [How to accept an invitation (teacher)](/en-au/article/how-to-accept-an-invitation-teacher-y0zvw4/)