Arguments for the measure, from the Colorado Legislative Council Ballot Information Booklet (PDF link).
"1) One of government's most important functions is to provide children with a high-quality education. To improve schools, the state needs a long-term solution that is innovative, accountable for results, and transparent to taxpayers. The additional money provided in this measure allows local boards of education to target areas where research suggests that investments are likely to produce improved student outcomes, such as ensuring effective teachers are in the classroom, reducing class sizes, investing in preschool and full-day kindergarten, upgrading classroom technology, and giving principals and teachers more control over budgeting decisions in their schools.
"2) Investing in public education is the best way to ensure a strong Colorado economy capable of competing in today's global market. One of the top priorities of businesses seeking a new location is identifying a well-educated workforce. Since budget year 2008-09, the state legislature has severely cut P-12 funding, with funding for the 2012-13 school year $1.0 billion below what the funding formula would have required. Restoring this funding shortfall not only benefits the state's schools and communities, but also provides a positive signal to companies looking to relocate or to expand in Colorado.
"3) The measure simultaneously restores funding to public schools that have suffered severe budget cuts and provides taxpayers with needed accountability by measuring how the increased investment will affect student achievement. The state will be required to prepare a return on investment study and a cost study to identify funding deficits that affect the performance of school districts and the academic achievement of students. The state will also make detailed expenditure data for each school and district available to the general public, allowing for comparisons between schools."