Private Tutoring Subject Tutoring Service Tutoring in Math, Science, English, History and Foreign Language. Tutoring for the AP Exams and SAT Subject Tests also available. Test Preparation Service SAT, ACT, PSAT, ISEE and SSAT. Private, small group and class formats available. Not sure which test to take for college applications? Take Chyten's proprietary ACT vs. SAT Comparison Test.