I recall it would go back and forth with Punahou and Iolani. Then a teacher at Iolani started a great prep program for the SAT and it got results.  Then parents got the word out and soon kids from Punahou came for the program. Training in test taking skills for students bright enough for those schools builds skills, but just as important confidence and being comfortable and focused. I saw how scores improved— from mid 600’s to mid 700’s and higher—and it was amazing. It is good to see several public school students and students from smaller private schools— I do not remember that much diversity.