My longest engagement was tutoring a 3 child family, meeting almost consistently on a weekly basis from 2014 - 2024.
The oldest (AP chem & ACT prep) graduated college some years ago.
The middle child (calculus & ACT prep (33)) spend time in England, studying at Oxford University and graduated in 2023.
The youngest (started in 5th grade, math all the way through algebra II, ACT prep (32)) is close to graduating.
Additionally, we studied subjects not covered (elected) in school, such as trigonometry, intro calculus, intro physics,
intro chemistry and a bit of German.