I would recommend that you check out the informational page, provided by SheerID, the Spotify Student Verification Partner.
If your institution is not listed, I’d recommend reaching out to Spotify for more help. Just fill out the online contact form to create a ticket with support. If you would prefer not to send an email, you can reach them on twitter at @SpotifyCares, or on Facebook by sending a message to the Spotify Cares Facebook page.
I hope this helps!
Have an awesome day!