@bjkmom True, you can’t rely entirely on a teacher or that a normally good teacher will not be facing exceptionally challenging circumstances. That maybe one of the main reasons for a parent to hire a private tutor. The year my older daughter was to take AP Spanish, the tough teacher with a fantastic record suddenly quit. A non native inexperienced teacher replaced her. I am a native speaker, so I took the responsibility of guiding my daughter with editing her essays etc., and she did fine, but the non heritage language kids without outside help struggled unnecessarily. On her Senior year, the AP Calc veteran teacher retired. He was replaced by a young inexperienced teacher. Pretty much all but the kids with private tutors failed and or dropped out of AP Calc. Neither of those teachers were allowed to stay in those positions past that one year, but the damage was already done for those students.