An Indiana University report says the state's schools should come up with new ways to solve discipline problems instead of relying on strict rules that punish all students the same way.
The university's Center for Evaluation and Education Policy says that many schools use rules like zero tolerance policies or one-day suspensions that may not change student behavior.
During the 2005-2006 school year, there were 6,324 expulsions and 313,322 suspensions in Indiana schools. More than 600 schools reported 10 or more suspensions for every 100 students.
IU researchers suggest a system that includes schoolwide initiatives, group interventions for those with common disciplinary problems and individual interventions.