You can try out a demo of the current version here. Feel free to add accounts, content, etc. There are three main accounts:
Admin Account
User: admin
Password: admin
Teacher Account
User: teacher
Password: teacher
Announcement Account
User: announcer
Password: announcer
Be sure to check out the user manuals if you have a question.
This is an unrestricted demo. Please do not deactivate the teacher and announcer accounts. If the accounts don't work, you can register your own and use the admistrator account to approve them. The administrator account cannot be deactivated or removed.