Book Club Question

I'm not a member of the book club, which is why I can't post this on that forum.

Does anyone know how often they read a book togther? Monthly? Quarterly?

I saw they just started a book, but it's almost the end of the school year (I'm a teacher) so I am a little busy right now...

Would like to do a book over the summer if they end up doing one in June or July.

Thanks friends!