The middle school I went to in the 90's had bike racks. They were old and corroded, most were kinda shoved to the side. I never once saw a bike locked to them, and I got the feeling that you'd get in trouble if you did.

That school was about 60 years old, and was once the town high school, it was in amongst the residential side of town. They opened a new middle school out on commercial land back behind the Best Buy out on the stroad that's only known by its US route number. They installed no bike racks there.