OMAHA, Neb. (AP) — School officials are trying to quell student behavior problems at an Omaha middle school, where enrollment has nearly doubled with the addition of sixth-graders this year.

Omaha Public Schools Superintendent Mark Evans and two school board members visited Nathan Hale Middle School on Tuesday in response to complaints from parents and staff about the behavior.

Snow says he has talked to teachers about students throwing things, running in the halls and interrupting class. School board member Justin Wayne says teachers are also overwhelmed.

School district spokeswoman Monique Farmer says the problem stems from a small number of students who disrupt the school day.

Omaha Education Association president Bridget Donovan says officials are struggling to keep teachers from leaving the school.

The school district says it’s adding more security guards and two student deans to the middle school’s staff.