I've read in several places on this forum that high school rigor is important and that SAs do take into account the rigor of the high school. Also, I've read that SA's "know the schools". What is meant by rigor? Rigor of the classes offered (AP/IB etc), rigor of the class make up/competition (90% to 4 year colleges, several to Ivies)? What if a candidate goes to an inner city school with the IB but only 50% go on to 4 year schools. Is that rigorous? If anyone has insight into how the SAs factor in rigor, that would be much appreciated.