CHICAGO (AP) — Chicago’s school board has decided to keep a police presence in some of its schools despite the demands of protesters who say school resource officers create an unsafe learning atmosphere.

The Board of Education voted 4-2 on Wednesday to renew a contract with the Chicago Police Department to provide uniformed officers to schools that want them. The $12.1 million contract is less than last year’s $33 million deal. The agreement presented by school officials includes for the first time a detailed job description for officers. The contract prohibits officers from intervening in school discipline and requires them to undergo further training on dealing with children of various backgrounds.