Some Differences between Google for Education and a regular Google Account
Classroom, an app that is available only with Google Apps for Education
No advertising on your Education Account
Professional email at your school's domain (Ex: @yourschool.edu or @yourschool.org instead of @gmail.com)
You can potentially can have shared Calendars
There is an administrator that can limit or enable certain features for different users
Google for Education has a Student Privacy Pledge where they protect your data and don’t sell it to third parties
And as of now you have unlimited storage in your Google for Education Account, whereas in you regular Google Account you have 15 GB of free storage across Dive, Gmail, and Google + which you can increase for a monthly fee, 100 GB is 1.99 a month, 1 TB, is 9.99, and so and so forth.