She spent her evenings 'tutoring' her son in math. [=helping her son study math]
Some teachers stay after school to 'tutor' [='coach'] struggling students.
She earned extra money 'tutoring' in the evening.
(..) I have a very strict schedule. My days are all planned out. I get up in the morning... breakfast, math tutor, Latin tutor, lunch, tennis lessons, dance lessons... sometimes both... French tutor, piano lesson, then I eat dinner. And after dinner (..)2004 The Notebook