Dramatic hair changes ( normally a pixie or bob cut ) - Ask why this person got there cut short, if they cut it.. normally if they cut it it could’ve been from anger or depression.
Seeming high (on drugs) a lot - if this person seems like he/she is always on drugs (not in the right place.. not acting normal - like themselves)
CUTTING!! (If you touch there arms or “thigh” and they find it painful.. has razors or knifes with them) - talk to them.. find a school counselor or therapist for them
Often skipping school coming back sad - you could help by talking to them like alway therapist, school counselor etc.
C’Mon use that brain of yours what’s something you notice.. just one more to go! :)