Plus, kids from unstable homes where the parents need them to earn money will sometimes drop out of school to help their family. It's best not to incentivize that.
very specific problems have very specific solutions. if this is the main concern, make it illegal to schedule school-aged children for shifts during school hours.
And then that creates other sorts of specific problems. What of mine conventional schools? Seniors who make their own schedule ? Home school kids ? Are now drop-outs dropped from making an income ?
Dropping out is possible, and usually 18/19 y/o don't have high school