IXL's smart score system destroys students' self esteem and confidence while completing IXL assignments. In IXL, once you hit the score of 85, whenever there is one mistake made you lose 10 points even though you only gain 2 per correct question. It is unfair and causes students to despise doing school work. If not to ban IXL, at least stop forcing students to get a 100 mastery score on IXL.