What about ruling out any kids who have a BP teacher at school? They may be spending 8 hours a day with someone BP and never know it, many of us hide our symptoms very well, or have it under control ... just sayin'... They're not really going to ever have a perfect control group, imho. And yea they should've let you know right away, and not waste your time - i think that's horrible. And disappointing... a chance to practice resiliency to ******** though I suppose.