personally, i think 10 is enough. apply to a few reach schools, a few schools u think u can get into and a few backup schools...u never know in this process (unless you have a 4.0/4.0gpa and 23+ DAT and are a people's person). but i think one important thing is to find out if a school accepts mostly in-state residents like colorado, or u of washington, or even loma linda (they accept a lot of Seventh Day Adventists). Depending on your stats, you probably shouldn't apply to those schools unless your a resident (Loma Linda is kind of an exception, but you have to get a rec letter from a religious leader).