Using the right assessments for your district is key to tackling achievement gaps. Bay District Schools knows this firsthand. After changing their approach to assessment, they helped struggling students experience phenomenal--and clearly demonstrable--growth. After implementing MAP® Growth™, Bay students at the lower end of the achievement spectrum (below the 30th percentile) across all grade levels grew well beyond what's considered normal. A typical median growth percentile for any group of students is the 50th percentile. In Spring 2018, the median score for this group of Bay students ranged from the 64th-70th percentile in math and 64th-75th percentile in reading. In order to improve outcomes for all students, though, Bay District is now turning their attention to high achievers. By using MAP Growth data to review their instructional practices, Bay District aims to help high achievers see the same type of growth.