Through Michael Guhlin (the post has a nice story about switching to open source), I found this site, which helps educators switch to OpenOffice.org and other open source software.
The first goal listed is "To promote opportunities for all students within the State of Texas to benefit from Open Source technology applications."
Since the TCEA conference I understand there's been a lot of movement in Texas toward open source, which is great. Looks like the SOS of Texas has some resources for you.
If you or your school is interested in OpenOffice.org or StarOffice learning materials of any kind, please contact me, of course. I offer site licenses with a big educational discount.