After paying attention to the Animoto website I realized they offer an educator account, which is their "All Access Pass". To get this account, scroll down to the bottom of the page, click on education, and then click on sign up.
Click here for the Education Sign up page.
1. Unlimited Videos
2. Full Length Videos (the free account only allows 30 sec. clips)
3. Downloadable Videos
The account expires in 6 months, but is renewable at that point. Also, your students can make accounts and use the education promotion code provided to you by animoto via email confirmation, to have the same "All Access" six month account.
Time to Animoto!