Disable the Home and End keys on a Mac

[Douglas Gilliland]

Is there a way to disable the Home and End keys on a Mac? I have
authored stacks for my high school students and don't want them to
bypass my questions by hitting these keys to go forward or backward in
the stack. Searched the Documentation (use the disable command?) and 
Shafer's book but none of my disable scripts would work.
Thanks,
Doug Gilliland
Sarasota, FL