As if vying for parental attention in a family of eight kids wasn't hard enough, two of Jon and Kate Gosselin's children have been expelled from school, and sources say it's for more than just bad grades.

Mom Kate previously asserted that Alexis and Collin, two of her 6-year-old sextuplets, were not expelled, but are being tutored at home because of their school's inability to meet their needs.

However, RadarOnline reports that not only were the children expelled, Alexis and Collin were physically violent toward both their classmates and a teacher at their private school.