Gravenstein Union Elementary: english

The shaded band is this district'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	94,237	2464.5	− 2432	32.5	× 70 / 480	4.7
4	94,238	2508.2	− 2473	35.2	× 68 / 480	5
5	94,241	2555.5	− 2502	53.5	× 75 / 480	8.4
6	94,242	2585.8	− 2531	54.8	× 70 / 480	8
7	94,245	2587.5	− 2552	35.5	× 83 / 480	6.1
8	94,246	2606.6	− 2567	39.6	× 114 / 480	9.4
Sum, rounded to a whole point						42

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	87,491	2483.2	− 2432	51.2	× 72 / 469	7.9
4	87,493	2527.8	− 2473	54.8	× 78 / 469	9.1
5	87,495	2565.6	− 2502	63.6	× 71 / 469	9.6
6	87,498	2576.1	− 2531	45.1	× 85 / 469	8.2
7	87,499	2605.1	− 2552	53.1	× 82 / 469	9.3
8	87,502	2607.9	− 2567	40.9	× 81 / 469	7.1
Sum, rounded to a whole point						51

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	89,988	2476.2	− 2432	44.2	× 79 / 466	7.5
4	89,990	2524.2	− 2473	51.2	× 78 / 466	8.6
5	89,992	2551.1	− 2502	49.1	× 73 / 466	7.7
6	89,995	2579.3	− 2531	48.3	× 75 / 466	7.8
7	89,996	2603.5	− 2552	51.5	× 82 / 466	9.1
8	89,999	2606.3	− 2567	39.3	× 79 / 466	6.7
Sum, rounded to a whole point						47

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	90,189	2507.7	− 2432	75.7	× 81 / 500	12.3
4	90,192	2538.7	− 2473	65.7	× 92 / 500	12.1
5	90,193	2547.8	− 2502	45.8	× 75 / 500	6.9
6	90,196	2575.1	− 2531	44.1	× 84 / 500	7.4
7	90,197	2591.2	− 2552	39.2	× 90 / 500	7.1
8	90,200	2611.4	− 2567	44.4	× 78 / 500	6.9
Sum, rounded to a whole point						53

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	90,795	2491.3	− 2432	59.3	× 79 / 489	9.6
4	90,796	2546.3	− 2473	73.3	× 82 / 489	12.3
5	90,797	2572.8	− 2502	70.8	× 93 / 489	13.5
6	90,798	2576.3	− 2531	45.3	× 69 / 489	6.4
7	90,799	2593.2	− 2552	41.2	× 86 / 489	7.2
8	90,800	2593.6	− 2567	26.6	× 80 / 489	4.4
Sum, rounded to a whole point						53

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	91,037	2488.0	− 2432	56	× 81 / 506	9
4	91,038	2508.6	− 2473	35.6	× 73 / 506	5.1
5	91,039	2534.6	− 2502	32.6	× 69 / 506	4.4
6	91,040	2591.3	− 2531	60.3	× 79 / 506	9.4
7	91,041	2579.5	− 2552	27.5	× 102 / 506	5.5
8	91,042	2620.3	− 2567	53.3	× 102 / 506	10.7
Sum, rounded to a whole point						44

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	90,927	2471.4	− 2432	39.4	× 74 / 512	5.7
4	90,928	2534.2	− 2473	61.2	× 83 / 512	9.9
5	90,929	2536.8	− 2502	34.8	× 73 / 512	5
6	90,930	2554.7	− 2531	23.7	× 86 / 512	4
7	90,931	2588.9	− 2552	36.9	× 97 / 512	7
8	90,932	2595.0	− 2567	28	× 99 / 512	5.4
Sum, rounded to a whole point						37

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	90,876	2472.8	− 2432	40.8	× 78 / 533	6
4	90,877	2509.2	− 2473	36.2	× 73 / 533	5
5	90,878	2566.9	− 2502	64.9	× 90 / 533	11
6	90,879	2536.7	− 2531	5.7	× 89 / 533	1
7	90,880	2556.8	− 2552	4.8	× 103 / 533	0.9
8	90,881	2590.7	− 2567	23.7	× 100 / 533	4.4
Sum, rounded to a whole point						28

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	90,570	2455.6	− 2432	23.6	× 78 / 532	3.5
4	90,571	2519.6	− 2473	46.6	× 88 / 532	7.7
5	90,572	2547.3	− 2502	45.3	× 79 / 532	6.7
6	90,573	2590.0	− 2531	59	× 93 / 532	10.3
7	90,574	2579.9	− 2552	27.9	× 93 / 532	4.9
8	90,575	2603.1	− 2567	36.1	× 101 / 532	6.9
Sum, rounded to a whole point						40

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	90,225	2469.3	− 2432	37.3	× 87 / 550	5.9
4	90,226	2494.4	− 2473	21.4	× 80 / 550	3.1
5	90,227	2554.3	− 2502	52.3	× 92 / 550	8.7
6	90,228	2560.7	− 2531	29.7	× 90 / 550	4.9
7	90,229	2603.0	− 2552	51	× 112 / 550	10.4
8	90,230	2576.5	− 2567	9.5	× 89 / 550	1.5
Sum, rounded to a whole point						35

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. 42, 51, 47, 53, 53, 44, 37, 28, 40, 35 → 43
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: 4 · 2017→2018: 6 · 2018→2019: 0 · 2019→2022: 9 · 2022→2023: 7 · 2023→2024: 9 · 2024→2025: 12 · 2025→2026: 5 → average 6.8
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 6.8 × 2.66 = 18.1. Upper limit 61.1, lower limit 24.9.

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 — for a district, the total across its schools. From 2014–15, 2015–16, 2016–17, 2017–18, 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25, 2025–26.

Gravenstein Union Elementary