Animoto Question

Question for those of you who have used Animoto for projects in class.....
Do you have each student create their own account? (I think this only allows a 30 sec video) or Do you create an education account and give your students the account information to create their videos under your name/account?  I've seen some great student samples on here that are more than 2 minutes long, so I'm just wondering how that was done.