While I agree (mostly) with the sentiment of commenters, it’s easy for a conversation like this to veer into blaming parents for structural issues.

Parents are stuck between a rock and a hard place. Society expects their children to succeed in specific, somewhat arbitrary systems to succeed in life, but each child is their own being with talents, shortcomings, etc.

It’s impossible for a parent to serve both. Parents are making constant trade offs, and if paying to keep their kids on track at school seems to be the best option, then I support that.