If your 25-30, do you still talk to people you went to high school or college with?

not really to be honest, i dont even know where they are to talk to them

I seldom see classmates. Most are pear shaped, and over 60 y.o., I am still string bean. I got lucky, blessed maybe I should say somewhere along the line!! I always communicated better at that age with older folks or younger than me types. 
At 22, 25, we had a baseball team. A few of us... about 15, kept in contact. After that, we all dispersed and seldom see each other. Small town Texas, btw.
I still feel more aligned with the late teen guys than over 50s crowd. We play volleyball in Russia and when we pair-off into teams, if I am with the teens, I feel that we are age appropriate. I am more competitive with them, more comfortable...So some of us just lose contact naturally. I work in USA in a small town Chevy  dealership and often see classmates. But, my best buddies there are the teen-early 20s crowd. It is all according to each person's mentality. I still have dreams... the teen guys have dreams... older guys seem to have finality... not a future.
Wtf a mikasa body pillow? A Japanese silicon sex doll?)
Get a Thai or Philippine mail order bride! PILLOW??!?

Depends on how close you live to them or work near them, etc. Socializing after graduation depends a lot on what happens in life to you, where you go, what you turn out to be, etc.

Yes ,  i do  i still keep in touch with alot of my high school and college and most of my childhoods bestiest friends all these years , no matter what , where they are we all do talk and chat, call, writes and vidoe talk all the time. alot of them do live same state as me but we  do live at least 2-3 hours away different cities . and some of them i know since baby and then still keeping in touch . but before since this covid 19 virus came my friends and i cant hang out because i found out most of them hasnt got their vaccines tests , or shots. so there no way to hang out with them at all. but if you miss your friends and can able keep in touch with them that good but it nice for once to find your old friends and check on them what they had been doing all these years and some next year so you can see can catch up with them see them again in public . 

I still keep up with old school friends whom I've known since the late 1950s.  There are not many of us left though.  I also keep in touch with people I worked with for a few years just after I left school.  We write, speak on the phone and send each other greetings cards.  If the letters, cards and phone calls end we'll know that it means that another one of us has died.

No unfortunately. I kept in touch but I couldn't get on with one girl cos we grew apart.

At that age, I lived 1800 miles away from where I went to high school and college and never connected with them anymore.

If you are 25-30 it is no surprise that your lack of education is appalling.

I don't talk to anyone other than my Mikasa body pillow.