Except they were unusably slow. Literally.
Log in when class starts, you may get control after 10+ minutes. Opening a web browser was a mistake you may not live to regret.
The network there was not fast. The various security stuff slowed every computer down a lot.
I suspect they were already older and maybe underspec. Probably had 4200 RPM disks or something.
But the combination meant they were 100% worthless.