Even if your school doesn’t rank you should probably have a rough idea where you stand in the class. Look at your school profile. Many schools give information about gpa ranges. The reason I ask is because admissions officers will try to guesstimate where you stand in the class either from knowing your school’s history or from the school profile. For the school’s you’ve listed you should at least be in the top 10 percent of your class (actually, in the top 1 or 2 percent is what you should be aiming for). Dartmouth, an Ivy similar to Brown or Penn, said that 35% of the admitted class were valedictorians and 10% were salutatorians.