Wireless internet versus hard wire which is better for schools

Wired is always better. It has less latencies, and less connection problems.

All stationary computers should be wired. Even professors laptop should be wired in their office. Just provide a network jack on the desk that is connected to the network jack at the wall so no one has to crawl on the floor.

I like wireless only for public hotspots where you are not required to provide a lot of support.