Please take internet advertisements of tutors that help students improve from U to A with a pinch of salt. The tutor does it by selecting the students with potential to do well and rejecting the rest. After the $250 trial session of a tutor, we have been nudged out when the tutor suggested that my daughter should be sitting for the International A levels, instead of Singapore-Cambridge 'A' levels Biology. Or that if she wishes to continue, he sets her a formidable task of tuition two times a week and completing many questions before each session. Biology is not the only subject my daughter is taking for her exams, she needs to spend time on other subjects too. A good tutor should be committed to teaching students who genuinely need help. Too bad that some tutors are only interested in maintaining their stellar records.