Luna is the owner of Scales Unlimited, an industrial truck scale company which he started in 1982. He was later appointed to be President of The International Society of Weights and Measurement and as a voting member of National Type Evaluation Program.
Education
Luna served on the Nampa School Board for seven years, three of those as chairman. As a member of the Nampa School Board, Luna supported school vouchers and tax credits for private schools as a means to increase competition in education. From 2003 to 2005 Luna worked for the United States Department of Education as an adviser to then-Secretary of Education, Rod Paige. He served as Executive Director for the White House Initiative of Tribal Colleges and Universities and as the Director of the US Rural Education Task Force. Running for the Superintendent of Public Instruction in Idaho position in 2006, Luna focused on promoting charter schools. Columnist William McGurn stated that he found Luna's business experience and lack of education degree, "refreshing". In 2006, Luna was elected as Idaho State Superintendent of Public Instruction. He was re-elected to a second term in 2010. He was also appointed Commissioner of Idaho Achievement Standards Committee and Chairman of the Idaho Assessment and Accountability Committee. The centerpiece of education reforms spearheaded by Luna following his 2006 election as Superintendent is a package of legislation known as Students Come First. Among the reforms in the Students Come First package, passed by the Idaho Legislature in 2011, are new limits to the collective bargaining rights of Idaho teachers, an increased annual minimum pay for new teachers by $345, a performance-based merit pay system for teachers, an increased classroom size in grades 4 through 12, a performance-based merit pay system for teachers, the phasing out of tenure and implementation of rolling contracts for teachers and administrators, mandatory online course credit as a high school graduation requirement, and providing laptop computers for all high school teachers and students. While serving as Idaho State Superintendent, Luna was Named President-Elect of Chief State School Officers and was appointed to the National Assessment Governing Board to help set policy for the National Assessment of Educational Progress.
Luna served the Idaho Republican Party as the Financial Chair of the Executive Committee. Luna ran for Chairman of the Idaho Republican Party in the summer of 2019 to fill the vacancy left by the February 2019 resignation of Jonathan Parker. Luna lost to Raul Labrador 109 votes to Labrador's 111. Luna defeated Mark Fuller; chairman of the Bonneville County Republican Central Republican Central Committee in a 274-262 vote in June 2020.
Personal life
Luna and his wife Cindy have six children and thirteen grandchildren. Luna is a Latter-day Saint.