SOUTH BEND, Ind. (AP) — Questions are growing over the effectiveness of an office created to address concerns over treatment of black students in South Bend.

David Moss was hired in 2013 to lead the African-American student and parent services department for the South Bend Community School Corp.

Moss drew fire last month over a series of field trips to local colleges for black third-graders. The district canceled the trips after receiving complaints that students of other races were being excluded.

The South Bend Tribune reports some groups including the local NAACP are now questioning whether Moss’s position is necessary and whether the school district has clear guidelines for the department.

School board president Jay Caponigro says Moss’ work is evolving, and that it could take several years to measure the impact.

Information from: South Bend Tribune, http://www.southbendtribune.com