[2] In 2004, Arntzen was elected to Montana House of Representatives for District 53, which includes a portion of Yellowstone County.
[6] As the newly elected superintendent, Arntzen was responsible in implementing the Every Student Succeeds Act (ESSA) in Montana.
The program is provided through Montana's Learning Hub through the Project AWARE-MT SOARS grant funding.
The contract, with Kognito Interactive Programs, provided unlimited access for all Montana educators, school staff, and OPI partners over a 12-month period.
[8] In June 2018, Arntzen announced that Montana was one of ten states to receive a $3.4 million grant from the U.S. Department of Defense for the Troops to Teachers program.