Cedar Grove Elementary: english

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.

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
3	87,015	2390.0	− 2432	−42	× 99 / 464	−9
4	87,018	2450.8	− 2473	−22.2	× 112 / 464	−5.4
5	87,019	2495.5	− 2502	−6.5	× 114 / 464	−1.6
6	87,022	2534.0	− 2531	3	× 139 / 464	0.9
Sum, rounded to a whole point						−15

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	80,757	2409.5	− 2432	−22.5	× 88 / 417	−4.7
4	80,758	2460.9	− 2473	−12.1	× 96 / 417	−2.8
5	80,760	2499.7	− 2502	−2.3	× 117 / 417	−0.6
6	80,763	2537.8	− 2531	6.8	× 116 / 417	1.9
Sum, rounded to a whole point						−6

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	82,985	2453.0	− 2432	21	× 81 / 391	4.4
4	82,988	2436.5	− 2473	−36.5	× 90 / 391	−8.4
5	82,990	2492.5	− 2502	−9.5	× 102 / 391	−2.5
6	82,991	2530.6	− 2531	−0.4	× 118 / 391	−0.1
Sum, rounded to a whole point						−7

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	83,203	2407.9	− 2432	−24.1	× 84 / 377	−5.4
4	83,205	2460.1	− 2473	−12.9	× 91 / 377	−3.1
5	83,207	2494.5	− 2502	−7.5	× 90 / 377	−1.8
6	83,209	2521.3	− 2531	−9.7	× 112 / 377	−2.9
Sum, rounded to a whole point						−13

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	83,811	2414.8	− 2432	−17.2	× 74 / 325	−3.9
4	83,812	2470.8	− 2473	−2.2	× 80 / 325	−0.5
5	83,813	2516.0	− 2502	14	× 87 / 325	3.7
6	83,814	2527.5	− 2531	−3.5	× 84 / 325	−0.9
Sum, rounded to a whole point						−2

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	84,006	2444.1	− 2432	12.1	× 78 / 314	3
4	84,007	2461.2	− 2473	−11.8	× 79 / 314	−3
5	84,008	2484.9	− 2502	−17.1	× 80 / 314	−4.4
6	84,009	2518.2	− 2531	−12.8	× 77 / 314	−3.1
Sum, rounded to a whole point						−7

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	83,947	2413.3	− 2432	−18.7	× 71 / 331	−4
4	83,948	2472.8	− 2473	−0.2	× 87 / 331	−0.1
5	83,949	2495.5	− 2502	−6.5	× 89 / 331	−1.7
6	83,950	2513.1	− 2531	−17.9	× 84 / 331	−4.5
Sum, rounded to a whole point						−10

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	83,948	2418.1	− 2432	−13.9	× 60 / 315	−2.6
4	83,949	2475.6	− 2473	2.6	× 73 / 315	0.6
5	83,950	2519.3	− 2502	17.3	× 87 / 315	4.8
6	83,951	2532.5	− 2531	1.5	× 95 / 315	0.5
Sum, rounded to a whole point						3

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	83,630	2400.0	− 2432	−32	× 58 / 287	−6.5
4	83,631	2476.3	− 2473	3.3	× 59 / 287	0.7
5	83,632	2519.4	− 2502	17.4	× 77 / 287	4.7
6	83,633	2551.5	− 2531	20.5	× 93 / 287	6.6
Sum, rounded to a whole point						6

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −15, −6, −7, −13, −2, −7, −10, 3, 6 → −5.7
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 9 · 2016→2017: 1 · 2017→2018: 6 · 2018→2019: 11 · 2019→2022: 5 · 2022→2023: 3 · 2023→2024: 13 · 2024→2025: 3 → average 6.4
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 6.4 × 2.66 = 17. Upper limit 11.3, lower limit −22.7.

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.