Our strategy was this. daughter wasn’t happy with PSAT score (she made NM Commended). With a full schedule of APs and music taking up time and energy we decided to skip any additional testing Junior year outside of SAT subject tests which she took in June after AP tests. Summer prior to Senior year she studied for August SAT. She committed an hour a day (sometimes less) to drilling on math with Khan academy. She bought the book of 14 practice SAT tests and would take one a week. By August she was close to a perfect score. She took the test and was extremely happy with results. We thought instead of getting a full time summer job…the test prep would pay off in merit aid. It did. We did not see the point in trying to study during the school year which was incredibly busy.