Yes, on the CD, it would have to be read-only. And sometimes files copied off
a CD seem to retain that property until you reset it. Also some commercial CD
products may have copy protection systems in place to prevent this.
Normally an educational CD product will have some kind of runtime program,
like a Director projector, to run the presentation. Can you find a program with
a .exe extension at the top level of the CD? Usually such a product would have
an autostart file to launch the exe, but maybe yours does not. Try to find the
exe. If you right click and look at it's properties, you may be able to find
out what you are dealing with. It might say Director projector, Flash
projector, or something else. That would be a good clue.