This is at least part of what you asked for:
http://avillage.web.virginia.edu/iaas/instreports/studat/dd/acad_gpa.htm
I didn’t find retention rates by school but here is by race:
http://avillage.web.virginia.edu/iaas/instreports/studat/dd/acad_grad.htm
Data digest main page if you want to hunt more:
http://avillage.web.virginia.edu/iaas/instreports/reportmain.shtm