Ultimate Ninjas is hosting two Open Gym Giveback events for Decatur Classical School! Have fun at Ultimate Ninjas and support your school at the same time! When: Friday 2/22/19; 6:30 PM – 8:30 PM             Friday 4/12/19; 6:30 PM – 8:30 PMWhere: Ultimate Ninjas ChicagoCost: $20 per ticket For every ticket sold, one-third of the proceeds will …