The schools DO have the legal responsibility to provide that "least restrictive appropriate eduational setting."  It may not be the "regular" classroom, but some educational program must be provided.  Often, for dysfunctional students, it will include a significant counseling/therapy component combined with the traditional "educational" program.  Return to the "regular" classroom will depend on the progress the student makes toward the "anger-management" or other issues which interfere with his/her successful participation in that regular classroom.  You are right in suggesting that dysfunctional students should NOT be allowed to repeatedly interrupt the educational opportunities of other students.  The schools have a responsibility to the disturbed students.....they also have a responsibility to the other students.  Gary crum