@jlhhlhlrh – I may be the outlier here but I would have your S take the PSAT and ACT in 10th grade to familiarize him with both tests. Then take the regular PSAT in 11th grade to qualify for NMSF. That can open up all sorts of scholarships at colleges across the country. Also take the regular SAT and ACT (again) in 11th grade. That way he has time to take them again in 12th grade if he needs higher scores.