hey guys. last year the first secondary i got was from the medical college of wisconsin during the last week in june. the last secondary i got was from loyola in early august. i applied to 19 schools and received secondaries from all of them. expect about two-three a week from late june through the end of july (more if applying to 20+ schools). once august hits almost all schools will have sent them out. there was a secondary date thread for the 08-09 applicants that will give you a guideline as to when to expect one from a partiucular school.
fyi - this process really sucks. i applied to 19 schools, got secondaries from all of them, and was granted 9 interviews, 8 of which i attended. i spent between 4k and 5k on app fees, airfare, hotel, meals, car rentals, gas, ect. also, most of these secondaries require multiple essay questions. i highly reccommend saving your essay responses in word so you can simply paste it on another app. quite a few apps use very similar questions, so it can save you time and energy. and trust me, writing essay responses over and over again, especially during the summer when you could be at the beach, gets really old fast. good luck to all of you. its really worth it when you get that accptance letter in the fall!