"We've had a very close working relationship," said Police Chief James Johnson, who called Rauenzahn "exceptionally approachable."
Abby Beytin, president of the Teachers Association of Baltimore County, said Rauenzahn "knows the system inside and out."
"He has always been not only very efficient, but he's really easy to work with and tries to make sure that things are working well," Beytin said. "He doesn't sit on things."
Rauenzahn will earn $153,158 in the new position, a $5,000 increase over his previous salary, Dickerson said.
Hometown: Willow Grove, Pa.
Education: The Johns Hopkins University, master's in educational administration and supervision, 1981; Indiana University of Pennsylvania, bachelor's in elementary education, 1976.
Family: Wife, Gail; three children; one grandchild
Previous posts: Began career with Baltimore County schools as a teacher at Victory Villa Elementary; was the county's first alternative education specialist; most recently was executive director of student-support services