Joshua
In the UK the Design & technology Association set up a network of funded 3D printers that could be used by schools to create their 3D products. Details on the Digital Design & Tchnology website.
I have been using one of the UP! 3D Printers marketed by Denford, which costs £1500 GBP - easy to use and produces quality outcomes. Could any of your schools afford one? May cost less in other countries.
Have you schools willing to do the same in whatever country you operate in.
Also have you considered using 123D Make - a free download from AutoDesk as a way of making 3D items using a laser. Can produce great results and you don't have to use any particular software for the source files just save as STL files.