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Characteristics of Public School Districts in the United States:
NCES 2009-320
June 2009

Appendix D. Description of Variables

The variables that are included in this report are listed in table D-1. Those with variable names that begin with "D" and are followed by four digits are survey variables that come from items on the Public School District Questionnaire. For survey variables, the numeric part of the variable name can be found in the questionnaires to the left of the corresponding question. The variables without the letter plus four digit names are "created variables," meaning they were created using survey variables, frame variables (variables taken from the sampling frame), other created variables, or a combination of these. They are frequently used in the National Center for Education Statistics (NCES) publications and have been added to the data files to facilitate data analysis. The definitions for the created variables follow table D-1. The variables without a variable name were created for this analysis and are not on the data files.

Number of schools per district (AG_NOSC2): A created categorical variable based on the continuous variable that identifies the number of public schools per school district, after frame collapsing procedure.

Number of teachers in public school districts who were dismissed or did not have their contracts renewed: A variable created for this analysis by adding D0318— the number of teachers without tenure in public school districts who were dismissed or did not have their contracts renewed— and D0319— the number of teachers with tenure in public school districts who were dismissed or did not have their contracts renewed.

Percentage of students in district approved for the National School Lunch Program (NSLAPP_D): NSLAPP_D is a continuous variable created by dividing the number of students approved for free or reduced-price lunches (D0287) by the total number of K–12 grade students enrolled among districts approved for the National School Lunch Program (NSLP) (D0295). Districts that did not participate in the NSLP have valid skip values. For this report, NSLAPP_D is re-coded as a categorical variable describing the proportion of students approved for free or reduced price lunches.

Urban-centric district locale code (URBAND12): A created variable collapsed from the 12 category urban-centric district locale code (DCLOP_07) which was assigned using the 2000 Decennial Census data and recoded into four categories: city, suburban, town, and rural.


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