After a few weeks of great activity, characters stopped logging on and the group became less and less active.
One of the admins started an internship and was no longer able to devote her time to the group, and the other one is heavily involved in another group.
While we loved this group and put lots effort into creating it, we realize that the concept may not have been enticing enough to the roleplay community, and were too busy to attempt a revamp.
Many of us are current members of the Connor University RP, which is similar to Preston and very, very active. You should check it out at Connoruniversity-rpg.tumblr.com.