who is this children's book author?

I believe I heard him interviewed on Michael Feldman’s Whaddya Know? It was on the radio, so it must have been some show on NPR if it wasn’t Feldman. So, the guy writes what I remember as very clever satire with puns galore about a school with 13 classrooms where, instead of being built side by side, for some reason the builders built them vertically. My google-fu is weak, and I can not find the name. Your assitance in this matter is appreciated!

Are you thinking of Louis Sachar and the Sideways stories from Wayside books?

Louis Sachar is it! Now if i can just remember this thread…