NAEP Technical DocumentationScience Assessment Estimation Variables for 2011

Variables used in the population structure model for the reading 2011 assessment are listed and described below.

Variables used for main effects and interactions in the population structure model:

HISPYES – School reported ethnicity - Hispanic. This variable has three levels: Yes, No, or Missing.

DSEX – School reported gender. This variable has three levels: Male, Female, or Missing.

DRACE10 – Student reported race. This variable has eight levels: White, Black, Hispanic, Asian, American Indian/Alaska Native, Native Hawaiian/Pacific Islander, More than one race, and Missing.

SDRACE10 – School reported race. This variable has eight levels: White, Black, Hispanic, Asian, American Indian/Alaska Native, Native Hawaiian/Pacific Islander, 2 or more races, and Missing.

SCHTYPE – Type of school. This variable has six levels: Public, Private, Catholic, Bureau of Indian Education, Department of Defense, and Missing.

CENSREG – Regions as defined by the Census Bureau. This variable has six levels: Northeast, Midwest, South, West, DoDEA International, and missing.

UTOL4 – Type of location. This variable has five levels: City, Suburb, Town, Rural, and Missing.

PARED – Parents education level. Information for this variable is collected from students at grades 8 and 12 only. It has six levels: Did not finish high school, Graduated high school, Some education after high school, Graduated college, Unknown, and Missing.

SLUNCH1 – School reported free or reduced-price school lunch. This variable has four levels: Eligible, Not eligible, Not available, and Missing.

ELL – English language learner. This variable has four levels: Yes, No, Formerly, and Missing.

SD3 – School-reported student with disability. This variable has four levels: Yes–IEP, Yes–504, No–not SD, and missing.

ACCOM2 – Accommodations. This variable has three levels: Accommodated, Not accommodated, and Missing.

CHRTRPT – Charter school flag. This variable has three levels: Yes, No, and Missing

Two-way interactions included in the population structure model: All main effects listed above were used to examine two-way interactions.

Main effects not used in interactions:

UTOL12 – Type of location. This variable has 13 levels: Large city, Midsize city, Small city, Large suburb, Midsize suburb, Small suburb, Fringe Town, Distant town, Remote town, Fringe rural, Distant rural, Remote rural, and Missing.

MODAGE – Modal age of sample. This variable has four levels: Below modal age, At modal age, Above modal age, and Missing.

SLUNCH – School lunch. This variable has seven levels: Not eligible, Reduced, Free, No information, Refusal, Not part, and Missing.

14 Additional Accommodations Variables – These variables (Read all in Spanish, Bilingual booklet, Bilingual dictionary, Read aloud, Braille, Large print, Magnification device, Scribe, Small group, One-on-one, School staff administers, Extra time, Breaks, Other) are from the front cover; each one is a separate background variable, scored as Yes or Missing.

CENSDIV – Census division. This variable has 11 levels: New England, Middle Atlantic, East North Central, West North Central, South Atlantic, East South Central, West South Central, Mountain, Pacific, DoDEA International, and Missing.

SENROLx – Number of enrolled students for each grade. This variable has six levels: five categories of enrollment sizes and missing.

PCTWHTC – Percentage of White students. This variable has six levels: 0, 1–5, 6–25, 26–50, 51+, and Missing.

PCTBLKC – Percentage of Black students. This variable has six levels: 0, 1–5, 6–25, 26–50, 51+, and Missing.

PCTHSPC – Percentage of Hispanic students. This variable has six levels: 0, 1–5, 6–25, 26–50, 51+, and Missing.

PCTASNC – Percentage of Asian students. This variable has six levels: 0, 1–5, 6–25, 26–50, 51+, and Missing.

PCTINDC – Percentage of American Indian students. This variable has six levels: 0, 1–5, 6–25, 26–-50, 51+, and Missing.

FIPS – Federal Information Processing Standards. This variable is defined for public school students in participating states.

Other variables:

Teacher questionnaire (934K PDF)

– YRSEXP – Years teaching experience. This variable has five levels: 0–4, 5–9, 10–19, 20+, and missing.

– YRSLART (grade 8 only) – Years teaching experience language arts. This variable has five levels: 0–4, 5–9, 10–19, 20+, and missing.

– YRSMATH (grade 8 only) – Years teaching experience mathematics. This variable has five levels: 0–4, 5–9, 10–19, 20+, and missing.

– YRSSCI (grade 8 only) – Years teaching experience science. This variable has five levels: 0–4, 5–9, 10–19, 20+, and missing.

Students with disabilities (SD) questionnaire (532K PDF) – 16 questions

Last updated 05 January 2016 (GF)

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