Have schools let people have days off for mental health

Background

People deserve to stay home if they're mental health is bad, possibly 2 or 3 days off, and for learning, they can ask the teacher for notes when they weren't in.

Additional details

People complain when people not go school, and schools think mental health is important whereas other schools think mental health is a dumb thing for others, and think they use it as an "excuse" and it definitely doesn't help with their mental health.