Christiansen is the past President of the Omaha Education Association. Prior to his election, Christiansen was a teacher at Technical and North High Schools. He established nationally recognized programs in the biological sciences and physics. Christiansen is a member of the Omaha Schools Foundation Board of Directors, NEA Committee on International Relations, Optimist Youth Foundation Board and he is a judge for the National Student Teaching Competition. "Graduating from South meant that I had the privilege of having teachers who cared enough to help me exceed myself--I have earned several diplomas, but the one from South High represents the kind of care and learning that has shaped my entire life."

Christiansen is the past President of the Omaha Education Association. Prior to his election, Christiansen was a teacher at Technical and North High Schools. He established nationally recognized programs in the biological sciences and physics. Christiansen is a member of the Omaha Schools Foundation Board of Directors, NEA Committee on International Relations, Optimist Youth Foundation Board and he is a judge for the National Student Teaching Competition. "Graduating from South meant that I had the privilege of having teachers who cared enough to help me exceed myself--I have earned several diplomas, but the one from South High represents the kind of care and learning that has shaped my entire life."