Some children with autism have difficulty with unexpected or unfavorable changes in their routine. The changes trigger an unpleasant reaction within the child, but instead of a mild tantrum or a sad facial expression, the child often overreacts with aggression. nnIf the parents recognize this and do an excellent job of maintaining a schedule and giving the child advanced warning of upcoming changes, the child has a less intense reaction. If the child’s school is less able to provide ample warnings for changes that are about to occur, the child’s behavior will be worse at school than at home.nnObviously, other negative issues at school such as conflicts with teachers, therapists, or other students can be a major source of this pattern as well.