I'm not sure if it is possible but in the long run, even if you could get it to work, I think it would be far simpler to use the FRC version. NI has said before that there should be no issues installing the FRC version along side a newer or older version of LabVIEW.
The FRC version of LabVIEW comes with several different toolkits (or portions of the toolkits). It has the RT, control design & simulation, FPGA, Vision, and I might be missing a few. FRC requires that you use a certain cRIO image, which is installed with the FRC LabVIEW. I'm not sure if this image which is based on 8.6 can load and run VIs built with 2009.
It's also important that you are using the same version of LabVIEW as your students so you can better help them.
If you're really interested in taking this on, I'd suggest you ask at the NI forums at
http://www.ni.com/first