I did SMDEP in 2006 at Columbia. It was the second best experience of my life! Every week, we had a little seminar w/ a specialist within dentistry. We took physics, bio, calc, and organic. I think once a week there was a lady who gave a class on how to better your gpa. We also went around NYC to different clinic sites. There were weekend excursions such as a boat ride on the Hudson, the Body Exhibit, etc. The best part of the whole thing for me was meeting all these smart talented people. It made me come back ultra motivated.
We also did dental stuff such as making casts/working in the wet lab, and drilling.
Anywho, you will meet some of the best people ever and will go out A LOT!! Hopefully, those of you that go will come back to your respective schools as motivated as I did. When you go, and get into dental school afterward, dont forget to write thank you notes to the Robert Wood Johnson Foundation!!