Ning Help Please

Hello there,

I have a closed Ning Network that I am using for and Ancient Roman Character project.

The students have done great work. I would like to make it available for parents to see, but with disabling the students from posting anything either than project related work.

Any ideas?  Essentially leaving the Logins in tact but freezing the accounts so all material is there, and can not be changed.

Thank you in advance!

Jennifer