I signed up for the mailist and got some help. That article from Linuxjournal was packed with a lot of good info and resources. Looking ahead, it appears clustering can be combined with LTSP.
I've made some progress but having problems getting php and mysql to work. Thanks for all your info and your help.
Comparisons and advocacy
K12LTSP Fedora based - Linux Terminal Server Project
This discussion has been locked because a year has elapsed since the last post. Please start a new discussion topic.