I will probably never recover from the social problems brought on by school. I still don't trust anybody who wants to be my friend, because at any point they could be nasty and then I might be stuck still having to talk to them or whatever.
I am trying to re learn how to behave socially, after school beat it into me that you only socialise with people within a year of your own age, that you have to try your hardest to never stand out (I used to answer 25% of questions wrong on purpose, because otherwise teachers gave me detentions for writing messily and so on, because they assumed that someone clever at one thing must be clever at everything). I learned that caring about schoolwork was deeply uncool, and that maths and science weren't for girls. I learned that sport meant people shouting and jeering while you tried to do stuff that you just couldn't do, and that asking questions outside of the scheme of work was a bad idea. Endless "sammy snail awards" and detentions for getting changed slowly. Other girls laughing at each others bodies, and boys groping us. I could go on.
Strangely enough, in real life I do my uni study at times that fit my natural body clock, I haven't had a 9am start at work for over a decade (what jobs even have that anyway? Surely not everyone works in offices at the exact same time? I have started at times between 5am and 11pm, and hardly ever monday to friday), I manage to wear a suit and smart shoes when needed, I enjoy sport, and I speak to and work with people of all ages perfectly well. I work in very successful teams, and indeed lead and train people to do well, yet none of it involves making a poster. In fact, I do sometimes make posters for my job, but they aren't just copied from a textbook, demonstrating a topic I understood a term ago but I have to repeat AGAIN because of people arsing about. The cultural references I use aren't the ones from school - they are from classics, film, music, internet, politics, poetry that I somehow managed to read without someone making a class of us read one page each r..e..a..l..l..y.....s....l...o...w...l...y. I have workied with people with severe mental illness, the elderly, children, academics, people in all kinds of situations, yet none of them has been interested in the brand or colour of my coat.
The only people I am in touch with from being under 16 are friends from extra curricular stuff, neighbours and family friends.
So, yes, school definitely has it's benefits (I wouldn't send my daughter if not) but please don't assume that it is in any way a good social training ground for life.