[ISLMA-Share] (ISLMA-Share) Open eBooks

[Email list for the Illinois School Library Media Association]

Hello,
I was wondering if anyone has had experience with the free Open eBooks? One of my schools qualifies for it and I'd like to share it with my teachers so they can sign up for the codes and PIN combinations for each of their students. We have about 580 students in the building. I don't want to pass any cost along to the students or the school and I noticed in the information it says, "Limit 500 access codes per order. When using the app, standard data rates apply." I'm looking for advice about the program and how to manage it.
https://www.fbmarketplace.org/openebooks

TIA!

Vicki Hall
Middle School Librarian
Springfield Public Schools #186
Springfield, IL