What do you mean by screener schools? Schools that screen applicants and have so called cut offs? If thats what you mean, I would say MOST schools have some sort of cut off in the upper 20's for MCAT in order to weed out people before offering them interviews. Some would argue that more "competative" programs have even higher cut offs in the low to mid 30's. Thats all up for debate I guess, as you'll hear of someone somewhere getting interviews and acceptance with lower scores.