Including disability status and other factors, such as accommodation use, in the models may reduce systematic errors in the value - added for teachers with large proportions of students with disabilities, but doing so could create incentives for
improper placement of students into special education.
It was a particularly strong issue in the East Ramapo Central School District, where the school board has faced criticism for budgetary cutbacks, allegations
of improper placement of special education
students, and providing school materials to private yeshivas, among other complaints.