Appendix B - Methodology

Item Nonresponse

Some items were not available at the school district level. The following items describe nonresponse in the CCD school and agency universe surveys that affected the information presented in this report:

• no teacher counts at the school level for Tennessee and New York City Public Schools, New York;
• no data on race/ethnicity or free and reduced-price lunch eligibility for Tennessee;
• no Individualized Education Program (IEP) data for New York City Public Schools, New York;
• no school-year or summer migrant data for Maryland, New York, Tennessee, and Washington, and no summer migrant data for Ohio and Texas.
• no English language learner (ELL) data for Illinois, New York, Pennsylvania, Puerto Rico, or Tennessee.