Georgia Milestones End-of-Grade Lexile Reading Scores

Lexile reading-measure distributions by grade at school, district, and state level, 2015-2024.

Source: Governor's Office of Student Achievement (GOSA)
Year coverage: 2015–2024
Updated: annual
Version: 1.0.0
Schema hash: 971f8f1c82d6

Detail levels available

StateDistrictSchool · default

Overview

Lexile reading-score outcomes for Georgia public-school students taking the Georgia Milestones End-of-Grade (EOG) English Language Arts assessment in grades 3-8. Each row is one (entity x grade) cell reporting students tested, students who received a Lexile measure, students whose Lexile met or exceeded the grade-band stretch midpoint (a national reading-level benchmark), students without a Lexile score, and the average Lexile measure. State, district, and school detail levels; no demographic breakdown (every row is implicitly All Students). School years 2014-15 through 2023-24; 2019-20 is absent (EOG testing suspended, COVID-19).

Row grain: One row per year, district_code, school_code, grade_level, subject.

Key metric

avg_lexile_score — Average Lexile Score (score, 0–2000)

The single headline value most answers want.

JSON schema →Data contract (YAML) →

Variables

Every column in the fact table. The code is the exact field name the API returns.

Column	Type	Unit	Range	Null?	Description
`year`Year	integer	—	—	no	Ending calendar year of the school year (e.g., 2024 = 2023-24), from the filename and cross-checked against the file's SCHOOL_YEAR column. 2020 has no rows (EOG testing suspended during COVID-19 closures). Full description▾ Ending calendar year of the school year (e.g., 2024 = 2023-24), from the filename and cross-checked against the file's SCHOOL_YEAR column. 2020 has no rows (EOG testing suspended during COVID-19 closures).
`district_code`District Code	string	—	—	yes	GOSA district code (FK to districts dimension): 3-digit zero-padded standard codes or 7-digit state-charter codes. NULL on state-level rows. Full description▾ GOSA district code (FK to districts dimension): 3-digit zero-padded standard codes or 7-digit state-charter codes. NULL on state-level rows. Joins districts; adds its label columns.
`school_code`School Code	string	—	—	yes	GOSA school code, zero-padded to 4 characters (composite FK to schools dimension with district_code; not globally unique on its own). NULL on district- and state-level rows. Full description▾ GOSA school code, zero-padded to 4 characters (composite FK to schools dimension with district_code; not globally unique on its own). NULL on district- and state-level rows. Joins schools; adds its label columns.
`grade_level`Grade Level	string	—	—	no	Grade the EOG ELA assessment was given to, as a 2-char code (03-08; EOG covers grades 3-8). Full description▾ Grade the EOG ELA assessment was administered to, as a canonical 2-char zero-padded string (03-08; EOG covers grades 3-8 only). Bronze ACDMC_LVL_CD is already zero-padded in every year. 6 allowed values▾ `03` `04` `05` `06` `07` `08`
`subject`Subject	string	—	—	no	Academic subject; always english_language_arts (Lexile measures exist only for the EOG ELA test). Full description▾ Academic subject. Fixed constant english_language_arts: every Lexile measure derives from the EOG English Language Arts assessment (bronze has no subject column). Included for canonical-vocabulary parity with sibling Milestones assessment topics so API consumers can filter by subject uniformly. 1 allowed value▾ `english_language_arts`
`num_tested`Number Tested	integer	count	—	yes	Count of students who took the EOG ELA assessment in this cell. Bronze TOTAL_STUDENTS_TESTED. NULL when suppressed (TFS, 2021+) or genuinely empty in the source (every 2015-2019 file, 126-141 cells per year). Full description▾ Count of students who took the EOG ELA assessment in this cell. Bronze TOTAL_STUDENTS_TESTED. NULL when suppressed (TFS, 2021+) or genuinely empty in the source (every 2015-2019 file, 126-141 cells per year).
`num_with_lexile`Number with Lexile	integer	count	—	yes	Count of tested students who received a usable Lexile measure; never exceeds num_tested (verified, authored as a quality check). Bronze STUDENTS_WITH_LEXILE. NULL when suppressed. Full description▾ Count of tested students who received a usable Lexile measure; never exceeds num_tested (verified, authored as a quality check). Bronze STUDENTS_WITH_LEXILE. NULL when suppressed.
`num_at_or_above_lexile_midpoint`Number at or Above Lexile Midpoint	integer	count	—	yes	Count of students whose Lexile measure was at or above the grade-band stretch midpoint (GOSA's on-track-reader threshold). A raw COUNT, not a percentage — to derive the share, divide by num_with_lexile (the population with a valid Lexile), not num_tested. Never exceeds num_with_lexile (verified, authored as a quality check). Bronze LEXILE_ON_OR_ABOVE_MIDPOINT. NULL when suppressed. Full description▾ Count of students whose Lexile measure was at or above the grade-band stretch midpoint (GOSA's on-track-reader threshold). A raw COUNT, not a percentage — to derive the share, divide by num_with_lexile (the population with a valid Lexile), not num_tested. Never exceeds num_with_lexile (verified, authored as a quality check). Bronze LEXILE_ON_OR_ABOVE_MIDPOINT. NULL when suppressed.
`num_without_lexile`Number Without Lexile	integer	count	—	yes	Count of tested students who did not receive a Lexile measure. Bronze NO_LEXILE_SCORE. From 2021 onward ~99% of cells are TFS-suppressed (few students at any school lack a Lexile), so the column is ~99% NULL post-COVID; retained for pre-2020 comparability. CAVEAT: num_with_lexile + num_without_lexile does NOT reliably equal num_tested — small +/- discrepancies exist in every year, and 2023/2024 state- and district-level rows fall short by thousands (the published aggregate does not reconcile); published values are preserved exactly. Full description▾ Count of tested students who did not receive a Lexile measure. Bronze NO_LEXILE_SCORE. From 2021 onward ~99% of cells are TFS-suppressed (few students at any school lack a Lexile), so the column is ~99% NULL post-COVID; retained for pre-2020 comparability. CAVEAT: num_with_lexile + num_without_lexile does NOT reliably equal num_tested — small +/- discrepancies exist in every year, and 2023/2024 state- and district-level rows fall short by thousands (the published aggregate does not reconcile); published values are preserved exactly.
`avg_lexile_score`Average Lexile Score	number	score	0–2000	yes	Average Lexile reading measure among students who got one, on the natural Lexile scale; not a percentage. Full description▾ Average Lexile reading measure among students who received one, to one decimal place on the natural Lexile scale (observed 300.0-1435.0 across all years; the contract enforces 0-2000 — a Beginning-Reader BR floor below 0 is unreachable by a school/grade average). NOT a percentage; never rescaled. Bronze AVG_LEXILE_SCORE. NULL when suppressed.

Filters

Query parameters the fact endpoint accepts. Comma-separated values are OR within a parameter; multiple parameters AND together.

Parameter	Kind	Allowed values	Notes
`year`	year_exact	any value	—
`year_min`	year_range	any value	—
`year_max`	year_range	any value	—
`detail`	detail	`districtsschoolsstates`	enum-enforced, default: schools
`district_code`	foreign_key	any value	multi-value
`school_code`	foreign_key	any value	multi-value
`grade_level`	categorical	`030405060708`	multi-value, enum-enforced, pick one
`subject`	categorical	`english_language_arts`	multi-value, enum-enforced, pick one
`district_type`	dimension_attribute	7 allowed values▾ `commission_charter` `resa` `standard` `state_agency` `state_charter` `state_school` `state_special`	multi-value, enum-enforced

Example requests

Run these against the base URL — they return live data.

All rows (first page), schools level

curl "https://georgiacivicdata.org/api/v1/education/georgia_milestones_end_of_grade_lexile"

schools data for 2024

curl "https://georgiacivicdata.org/api/v1/education/georgia_milestones_end_of_grade_lexile?year=2024"

Filtered to grade_level = 03 for 2024

curl "https://georgiacivicdata.org/api/v1/education/georgia_milestones_end_of_grade_lexile?year=2024&grade_level=03"

One district (code 601), 2024

curl "https://georgiacivicdata.org/api/v1/education/georgia_milestones_end_of_grade_lexile?district_code=601&year=2024&detail=districts"

Download 2024 as CSV

curl "https://georgiacivicdata.org/api/v1/education/georgia_milestones_end_of_grade_lexile?year=2024&format=csv"

Notes & limitations

NULL handling

Suppressed cells (too few students to report) are NULL, never zero.
Zero is a real, reported value.

Limitations

Suppressed cells are NULL (not zero). State rows have NULL district_code and school_code. District rows have NULL school_code.