I've just done this, and poser hasn't even slowed down yet.

Now I'm going to parent all those kids and the teacher in one hit to a grouping object using semidieu's advanced figure manager, and move them all forward somewhat.

Hmm I could duplicate some of those kids I suppose and just change their hair and faces a little.

MY ONLINE COMIC IS NOW LIVE

I aim to update it about once a month.  Oh, and it's free!