All students in the city ride for free right now.
If students are going to ride the bus, enter through the back door of the bus. This helps avoid the front door where the general public takes care of paying their fares. If anyone questions you, all the student has to say is that "all students ride for free". No student ID is required. Just use the back door.
The City will be calling the district when they are starting to charge fares again. This post will be updated when students can no longer ride for free.