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charset=utf-8","role":"api_states_math_8"}],"notes_ru":"Одна строка — одно число NCES. measure scale_score, stat: mean (средний балл) или p10, p25, p50, p75, p90 (балл, ниже которого 10, 25, … 90% учеников). study: NAEP LTT (долгосрочный тренд, age — 9, 13, 17 лет) или NAEP (основной, grade — 4, 8, 12 класс). Шкала 0–500, кроме математики 12 класса с 2005 года (framework 2005, шкала 0–300); математика 12 класса 1990–2000 (framework 1990) с ней не сравнивается (trend_comparable=false). sample: R1 — исходный формат LTT без особых условий (1971–2004), R2 — основной NAEP без особых условий (1990–2000), R3 — с особыми условиями для детей с инвалидностью и изучающих английский (LTT с 2004, основной NAEP с 1996/1998). catalog_chain=true — значение ряда каталога; bridge=true — год, где NCES провёл оба варианта (LTT 2004; основной NAEP 1996/1998 и 2000). se — стандартная ошибка среднего из таблиц Digest (LTT — до 2023, основной NAEP — до 2022; для 2024, для переходных выборок без условий и для процентилей NCES ошибок в открытых таблицах не даёт, поле пустое). sig_vs_previous и sig_vs_first — итог проверки значимости NCES (NAEP Data Service, sigacrossyear, p < 0,05) против previous_year и first_year: higher, lower или equal (разница незначима); significant — то же да/нет для сравнения с предыдущим годом. mode: paper / digital (основной NAEP 4 и 8 класс с 2017, 12 класс с 2019; LTT всегда на бумаге). 1973 математика LTT — экстраполяция NCES (extrapolated=true), только среднее. Штаты (entity_type subnational, USA-XX) и государственные школы страны (group USA_PUBLIC) — средние 4 и 8 класса 2003–2024 без ошибок.","notes_en":"One row = one NCES number. measure scale_score, stat: mean or p10, p25, p50, p75, p90 (the score below which 10, 25, ... 90% of students fall). study: NAEP LTT (Long-Term Trend, age 9, 13, 17) or NAEP (main, grade 4, 8, 12). Scale 0-500 except grade 12 mathematics from 2005 (framework 2005, 0-300); grade 12 mathematics 1990-2000 (framework 1990) is not comparable with it (trend_comparable=false). sample: R1 = LTT original format without accommodations (1971-2004), R2 = main NAEP without accommodations (1990-2000), R3 = accommodations permitted (LTT from 2004, main NAEP from 1996/1998). catalog_chain=true marks the catalog value; bridge=true marks years with both samples (LTT 2004; main NAEP 1996/1998 and 2000). se = standard error of the average from the Digest tables (LTT to 2023, main NAEP to 2022; empty for 2024, for the transition samples without accommodations and for percentiles, which NCES does not publish in open tables). sig_vs_previous and sig_vs_first are the NCES significance tests (NAEP Data Service, sigacrossyear, p < .05) against previous_year and first_year: higher, lower or equal (not significant); significant = the same as yes/no against the previous year. mode: paper / digital (main NAEP grades 4 and 8 from 2017, grade 12 from 2019; LTT always paper). LTT mathematics 1973 is an NCES extrapolation (extrapolated=true), average only. States (entity_type subnational, USA-XX) and national public schools (group USA_PUBLIC): grade 4 and 8 averages 2003-2024, no standard errors."}