Our high school was theoretically integrated too, with no majority race or economic class. But the tendency was to hang out with kids like you. My younger son had a much more integrated group of friends than his older brother, partly because he hung out with the music kids. He played in two orchestras, and his best friend had a rock band whose leader singer was black and lead guitarist was Indian-American.
Thanks to him I heard a lot of stories about how differently he was treated by the local police depending on just which friends he was hanging out with.
I am not a fan of affinity housing, though I do understand its attraction. I went to an all-girls high school and I know just what the positives of that kind of segregation are.