Multiple Students – One email

Hello @highlandranger

Hope all is well!

I am afraid it is not possible out of the box to have multiple accounts on WordPress site under the same email

Gmail account provides an option to have multiple emails under one account. Have a look at the instructions on how to create email Aliases:
https://www.labnol.org/internet/multiple-email-addresses-in-gmail/17426/

Since Aliases have different characters in email, a user can register few accounts on the same WordPress site with a single Gmail account.

Hope this helps