Rio Bravo-Greeley Elementary: math

The shaded band is this school's normal range. If nothing about how it works changes, nearly every future year should land inside it. Zero means the typical student just meets the state standard. The small numbers under the years are how many students were tested.

Measured against the grade bars

The state's math test uses one scale for every grade, so a score means the same thing in grade 3 as in grade 8.

5th The average 5th grader scores 37 points under the grade 5 bar. 2492 vs. 2528.
6th The average 6th grader scores 11 points under the grade 5 bar. 2517 vs. 2528. The 6th-grade bar is 2552.
7th The average 7th grader scores 10 points under the grade 7 bar. 2557 vs. 2567.
8th The average 8th grader scores just under the grade 7 bar. 2560 vs. 2567. The 8th-grade bar is 2586.

2026 results. "Meets standard" is the state's mark for being on track for that grade.

Step 1 · Each year's result

For each grade tested, take the average (mean) scale score from the California Department of Education's results file, and subtract the lowest score that counts as "Standard Met" for that grade. That is the grade's distance from standard. Weight each grade by its share of the students tested, then add the grades up. Grades where the state hides the average because ten or fewer students tested are left out entirely.

2015 from sb_ca2015_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
5	18,266	2458.8	− 2528	−69.2	× 122 / 425	−19.9
6	18,268	2463.0	− 2552	−89	× 97 / 425	−20.3
7	18,270	2512.2	− 2567	−54.8	× 95 / 425	−12.2
8	18,272	2536.0	− 2586	−50	× 111 / 425	−13.1
Sum, rounded to a whole point						−65

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
5	17,281	2499.8	− 2528	−28.2	× 102 / 443	−6.5
6	17,283	2492.9	− 2552	−59.1	× 124 / 443	−16.5
7	17,286	2505.4	− 2567	−61.6	× 107 / 443	−14.9
8	17,287	2563.3	− 2586	−22.7	× 110 / 443	−5.6
Sum, rounded to a whole point						−44

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
5	17,592	2477.3	− 2528	−50.7	× 121 / 465	−13.2
6	17,594	2506.7	− 2552	−45.3	× 107 / 465	−10.4
7	17,596	2516.8	− 2567	−50.2	× 122 / 465	−13.2
8	17,597	2516.5	− 2586	−69.5	× 115 / 465	−17.2
Sum, rounded to a whole point						−54

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
5	17,615	2472.1	− 2528	−55.9	× 126 / 490	−14.4
6	17,616	2509.3	− 2552	−42.7	× 128 / 490	−11.2
7	17,619	2557.0	− 2567	−10	× 115 / 490	−2.3
8	17,620	2539.5	− 2586	−46.5	× 121 / 490	−11.5
Sum, rounded to a whole point						−39

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
5	17,761	2496.2	− 2528	−31.8	× 120 / 511	−7.5
6	17,762	2497.5	− 2552	−54.5	× 130 / 511	−13.9
7	17,763	2512.9	− 2567	−54.1	× 145 / 511	−15.4
8	17,764	2578.5	− 2586	−7.5	× 116 / 511	−1.7
Sum, rounded to a whole point						−38

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
5	17,361	2483.9	− 2528	−44.1	× 111 / 424	−11.5
6	17,362	2489.5	− 2552	−62.5	× 100 / 424	−14.7
7	17,363	2502.9	− 2567	−64.1	× 95 / 424	−14.4
8	17,364	2509.3	− 2586	−76.7	× 118 / 424	−21.3
Sum, rounded to a whole point						−62

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
5	17,817	2506.3	− 2528	−21.7	× 103 / 426	−5.2
6	17,818	2510.1	− 2552	−41.9	× 107 / 426	−10.5
7	17,819	2507.7	− 2567	−59.3	× 107 / 426	−14.9
8	17,820	2543.7	− 2586	−42.3	× 109 / 426	−10.8
Sum, rounded to a whole point						−41

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
5	17,769	2488.6	− 2528	−39.4	× 88 / 419	−8.3
6	17,770	2525.8	− 2552	−26.2	× 112 / 419	−7
7	17,771	2527.5	− 2567	−39.5	× 112 / 419	−10.6
8	17,772	2531.1	− 2586	−54.9	× 107 / 419	−14
Sum, rounded to a whole point						−40

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
5	17,719	2500.8	− 2528	−27.2	× 122 / 441	−7.5
6	17,720	2520.7	− 2552	−31.3	× 97 / 441	−6.9
7	17,721	2565.2	− 2567	−1.8	× 104 / 441	−0.4
8	17,722	2555.7	− 2586	−30.3	× 118 / 441	−8.1
Sum, rounded to a whole point						−23

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
5	17,715	2491.3	− 2528	−36.7	× 122 / 444	−10.1
6	17,716	2524.8	− 2552	−27.2	× 112 / 444	−6.9
7	17,717	2525.5	− 2567	−41.5	× 101 / 444	−9.4
8	17,718	2579.5	− 2586	−6.5	× 109 / 444	−1.6
Sum, rounded to a whole point						−28

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
5	17,718	2491.5	− 2528	−36.5	× 102 / 419	−8.9
6	17,719	2517.2	− 2552	−34.8	× 114 / 419	−9.5
7	17,720	2557.0	− 2567	−10	× 103 / 419	−2.5
8	17,721	2559.8	− 2586	−26.2	× 100 / 419	−6.3
Sum, rounded to a whole point						−27

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −65, −44, −54, −39, −38, −62, −41, −40, −23, −28, −27 → −41.9
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 21 · 2016→2017: 10 · 2017→2018: 15 · 2018→2019: 1 · 2019→2021: 24 · 2021→2022: 21 · 2022→2023: 1 · 2023→2024: 17 · 2024→2025: 5 · 2025→2026: 1 → average 11.6
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 11.6 × 2.66 = 30.9. Upper limit −11, lower limit −72.8.

Why 2.66? It is the standard factor from quality control, the work of Walter Shewhart and W. Edwards Deming. It turns "how much the result typically changes in a year" into "how far it can wander by chance alone".

Years with no result (no state tests were given in spring 2020) are skipped: the year-to-year change runs from the last year with a result to the next one.

Step 3 · Free or reduced-price meals

The share of enrolled students eligible for free or reduced-price meals. From 2014–15, 2015–16, 2016–17, 2017–18, 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25, 2025–26.