from what i can understand glenn, it's not the dyno you are fooling, it's the calibrated settings that you are fooling into giving you a different corrected figure

for example, if you have a school where they give you extra points for kids who don't have english as their first language and those kids get better scores than the national average, the school "looks" to be doing better than it actually is

if you were to level the playing field and say that every school would publich the resluts that their kdis actually achived, then that school would be below the national average

the national average being the industry calibration for the dyno depending on how hot/cold it is and the school scores being the power figures