DENVER — Colorado Education Commissioner Richard Crandall has submitted his resignation after only four months on the job.

Crandall, a former Arizona lawmaker who also led the Wyoming Department of Education, said Thursday he decided to leave the post because his large family lives out of the state, and because of “the demands of the position and the time required to fully serve a state as diverse and expansive as Colorado.”

KUSA-TV in Denver reports Crandall has 13 children and five grandchildren. An attempt by The Associated Press to reach him for additional comment Thursday was unsuccessful.

The Board of Education is scheduled to meet Friday to discuss the resignation and to consider the appointment of an interim commissioner.