Well, I go to BU, and I have done both Apex I and II.
First Apex was good because I have never assisted before, nor have I spent much time in a dental office enough to learn, so I thought my first Apex made sense, but it was too long, it was 10 weeks long and by 5th week I was done and ready to get out of there.
The second Apex was so unesscessary, a waste of time because I have to assist or just observe and another 10 weeks is just too long.
By the way, they no longer pay students while students work on Apex. Ask any current DMD II students and they can give you a long, controversial story with all the hoopla between the administration and the student body. The final result is no pay and lots of meetings and petitions and that's it. Worse part was that current DMD II students started the year thinking we were getting paid, but by the time Apex rolled around, we were informed of no pay.
Apex seems ideal, but in reality, unfortunately it doesn't work out as well as they claim.