Hi Ethan,
I'd recommend the following if no one else in the class is having issues:
- Check your spam folder.
- Check your e-mail for Rules to ensure that you are not automatically moving these messages to another folder.
- Reach out to the school's IT department for them to check their e-mail servers and ensure that messages are being sent to your e-mail.
- Check your block sender list in your e-mail to ensure you haven't accidentally blocked Teams from sending you e-mails.
If this is helpful please accept answer.