Mastery learning high school writing curriculum for student achievement. Mastery learning high school literature & English curriculum. Small learning communities, test scores, high school writing curriculum and student achievement results. Bellevue International School and Lake Washington International Community School: small schools that raise student achievement and teacher effectiveness. Going beyond Six Traits rubrics and writing across the curriculum. Creating successful small learning communities: Bellevue International School and Lake Washington International Community School. Converting large public high schools into small learning communities.