bbPress.org

Just tried it and that doesn’t work, it updates the slug but bbPress doesn’t seem to pull its title from anywhere editable within the admin area.

However, if just changing the word Forums to Classrooms would solve your problem then it can be done via a function. This should work but please note I’m not a developer and I haven’t bug tested this or anything.

http://pastebin.com/uz9Ndb4i

I added this to my WordPress theme’s functions.php (before the end ?>) and it worked. Hope it will for you too!