Don't use Google Apps for Education for anything except for taking advantage of it by uploading your encrypted data to the nice "unlimited" Google drive space
I have a few terabytes of encrypted backups and disk images (via command line OpenSSL) on my "unlimited" Google Drive for Education account. I do not consider this an abuse, but a perfectly valid use case for Google Drive. If they don't like it, they can feel free to stop using the word "unlimited". However, I believe they do do some sort of throttling.