Make one for each child and then add hanging folders that say "Pre-K through 12th grade" you save things that come home during each school year (report cards, drawings, certificates, good grades, etc.) Love this idea
A box for each kid K-12 ... I had a professional organizer at my house (what a treat!) and she suggested this system for pictures and papers, etc. 1st year, 1-2, 2-3, 3-4, pre-K, K, 1st grade - 12th. So simple, but so brillant.