The thing I remember most about going to APG is walking to school from where I lived on Ulloa and having to trudge through the sand lot (where S.I. now sits) to get to the school. One semester I had to carry my music class trombone, plus homework books, all that way.
Also, the snack bar. If you didn't want to eat in the cafeteria (which I never did) you could get a hot dog and a Fudge bar or Sidewalk Sundae.
My last year at APG I had Mr. Greenberg as my gym teacher. He was a fairly strict guy. It so happened that when I went to Lincoln he also transferred Lincoln and I had him as my teacher my whole time there. We got along well.