Teams at all levels of the system (district, school, grade) use data to inform decision-making. District and school teams use an agreed-upon process to guide their decision-making and continually improve supports. Plan-Do-Study-Act (PDSA) is a common process teams use to efficiently solve problems in four main steps: (1) identify the problem and plan a solution; (2) implement the solution as intended; (3) measure the impact of the solution to determine if the impact met or exceeded the desired outcome; (4) and outline next steps (National Implementation Research Network, 2014). More info from OSPI