Age requirement: Student must be of age as of March 1, 2026. Mixed Age/Fours Classes: All students must be fully potty-trained before the start of classes and able to: Ask to use the restroom as needed; Pull down and pull up their own underwear and pants; Wipe, flush, and wash hands. Students registering DURING the school year MUST get a start date from preschool@communityarts.org or by calling 925-943-5899 Ext 2229 after registering!