Our former school district had a no bike-to-school policy. The bike would be confiscated until a parent came to pick it up. For them, I believe it was a safety issue. No sidewalks and narrow margins along the road. Also, many morning commuters used it as an alternative to the busy highway that ran parallel to it a couple of blocks up. Some of those cars would whiz by at 40mph even though it was a school zone and a residential street. They really need to add speed bumps to that road.

Current school, fortunately, has no such policy. There is an ample amount of bike racks for the students and faculty and I usually see at least a couple of kids' bikes in it. A couple of the teachers ride on a regular basis, though I don't believe they bike-commute to work. And this year, DS's school was one of the starting points for an organized bike ride to the coast.