Massachusetts uses information related to progress toward improvement targets, accountability percentiles, graduation rates, and assessment participation rates to determine each district and school’s overall classification. Most districts and schools are placed into two categories: those that require assistance or intervention from the state, and those that do not require assistance or intervention. Districts and schools that are new or very small are classified as having 'insufficient data'. Placing schools and districts into categories helps districts know which schools need more support, and helps the state know which districts need the most assistance. More information is available here: http://www.doe.mass.edu/accountability/.