Prom would be a fun event to host or send them too, study groups, and things that will get them in trouble from parents like being out too late or smoking/drinking. I'd like interactions like peer pressure, developing crushes on random teen sims (bc like real life, hormonal teens can fall "in love" with classmates who don't know they exist), getting dating advice/woohoo discussion from parents and we get to decide if parents are very strict or liberal, teens with very strict parents could have negative moodlets from getting a crush, peer pressure, and get more of a desire to run away or keep secrets from parents, and those with liberal parents will be more open to getting parental advice and not getting negative moodlets. IDK if this all exists already since my sims still only have toddlers :)