The state board of education shall establish a section of district reorganization. The state board, through the section of district reorganization, shall advise and, upon request by any county board of education, cooperate with the various county boards of education in making plans for the enlargement and reorganization of school districts throughout the state and shall provide the technical and advisory assistance in connection therewith that, in the discretion of the board, will promote efficiency in school administration and the improvement of educational opportunities for the school children of the state.