In the aftermath of the Ferguson protests and the fatal shooting of Michael Brown, citizens are questioning not only the makeup of police departments, but also their equipment. But it’s not just local police who are getting ahold of military gear — school districts are also arming their officers.

A NAACP Legal Defense Fund investigation found that school districts in eight states have requested and received weapons and equipment through the federal 1033 program that redirects a surplus of military gear to localities around the country. Ten school districts even received army-grade rifles, automatic pistols, magazines and thousands of rounds of ammunition.

Some Texas school officers have access to armor, vests and military vehicles. At least six California districts reportedly allow their officers to openly carry military rifles. San Diego Unified and Los Angeles Unified School Police each received Mine-Resistant Ambush Protected vehicles. Los Angeles school police also received 61 M-16 assault rifles and three grenade launchers.

“We saw in Ferguson how the use of military equipment intensified interactions between community members and police. Those same tensions are playing out in our schools between students of color and school police where implicit bias, broad discretion, and little accountability are resulting in excessive use of force, expulsions and suspensions for minor offenses, and referrals to the juvenile justice system,” NAACP Education Policy Counsel Janel George said.

The NAACP Legal Defense Fund sent a letter to the Department of Defense, requesting data on what school districts have received military gear and the type of gear they received and calling for the program’s end. The letter referenced how tensions escalated in Ferguson when police responded to protest with rubber bullets, tear gas and military vehicles.

“Arming school police with military weapons poses the same risks to a much more vulnerable population – the nation’s schoolchildren,” the letter said.

The 1033 program is reportedly under review after a congressional hearing discussed the effects of militarizing law enforcement on Sept. 9.