Six Wisconsin school districts that adopted the Common Core State Standards for Mathematics and used the educational resource ORIGO Stepping Stones saw increases in the percentage of 4th grade students with advanced and proficient mathematics skills over three years. The largest increase was seen in the Muskego-Norway School District, which realized a 13% gain. On average, the six districts saw a 7% increase, more than tripling the statewide average increase of 2%. The findings suggest that by combining passionate teachers, the Common Core standards, and high-quality educational resources like ORIGO Stepping Stones, student performance in mathematics can be improved.