With primary school, none of the bonds I had before it and made during it lasted. My best friend of that time abruptly ended our friendship during secondary school (we've since talked things out, but even though we're okay with each other now, we aren't really friends anymore, at the most I see her facebook posts and she sees mine). Another friend I practically grew up with I'm only really on facebook with and we rarely actually talk through there either. I also got out of touch with the neighbourhood kids, who I used to hang out with all the time growing up. I moved away for high school, so it just became this natural estrangement.
With secondary school, we were a group of four in the same class. I still am close friends with two of them. My best friend, who moved to the same town as I did, and another friend who stayed behind, and whom the both of us see whenever we go home to visit our families. The other one kind of estranged herself from the group (also I moved away for high school and our bond just didn't last like it did with the other two), but has in later years more actively kept in touch through facebook (though when I ran into her while at home, she didn't once suggest hanging out). Amusingly enough I have since gotten closer with someone else from secondary who I wasn't really close with when I was in school.
With high school, I made a couple of friends in that time. A couple within the schools I went to (none of those friendships have lasted, and a couple ended more badly than the others). I did make another friend during that time whom I didn't go to school with. We are still friends today, even though she now lives in the UK, so I can only really see her if she's available to meet when I'm over there.
With college, I made friends with two people that my best friend and I lived with (the three of them went to university, while I went to a different college in the same town) and they are still my friends. The people I went to school with, however, those bonds didn't really last. But then again because I had the social circle I had with the people I lived with, I didn't exactly actively seek out many friendships within my own school. I had a couple I hung out with during the college years, but we got out of touch afterwards.