Something to do with the schools

I'm posting photos of the things people publicize on the town "sandwich boards" because I find them hard to read as I drive by and suspect many other people have the same problem.

In this case, I was unable to read the sign standing (in the middle of
the road) two feet in front of it and had to zoom in after I took the
photo.

Do these sandwich boards work? I guess, if you are walking in the neighborhood, and are familiar with the town from living here a long time, it probably is more effective.