special-need students, groups that charter critics have argued are typically under-served. The results show overall gains of 0 ….35 standard deviations in math and 0.12 standard deviations in reading for each year spent at KIPP Lynn. LEP students, special … education students, and those with low baseline scores benefit more from time spent at KIPP than do other students, with reading …

submitted by teachers. We compared the performance of classrooms of elementary students in Los Angeles randomly assigned to … teacher impacts on student achievement. We found that students randomly assigned to highly-rated applicants performed better … than students assigned to comparison teachers, while students assigned to poorly-rated applicants performed worse …

,000 per charter school enrollee. We further show that competition drives the aggregate gains; test score impacts on students …

Teacher value-added (VA) measures how teachers improve their students' contemporaneous test scores. Many teachers …, however, argue that contemporaneous test scores are a poor proxy for their permanent influence on students. This paper … test scores with subsequent test scores in VA estimation. We find that students assigned to high long-run VA teachers fare …