All Bbs Boards Is There An Website That I Can Create A Page For My Class To Share Information?

Is there an website that I can create a page for my class to share information? - all bbs boards

I hope I have a page for all my colleagues to exchange information. I hope something like a BBS forum. Otherwise, we can all have a user name, but the mail files online.
Can anyone help please? I discovered that Apple and Yahoo could have something like that.