Hi @Anonymous,
Thanks for posting and welcome to the Fusion community! It's super exciting to hear that you will be using Fusion in your lab at the school!
The entitlement for Fusion is tied to the Autodesk account that was used to sign into the application. If you haven't already, I would make sure that you have create an account/register through the education site (I linked it here to make it easy on you! 🙂 ).
Once that account has been created/registered on our education site, you should be able to log into Fusion with those credentials and the trial countdown *should* disappear. If it doesn't, you may be experiencing a known issue, and at that point you should circle back here with me and I can get some wheels spinning in our back office to get that corrected.
I hope this helps! Please let me know if you have any questions or concerns. I look forward to hearing back from you!
Cheers,