Suisun Valley 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	93,113	2452.4	− 2432	20.4	× 74 / 319	4.7
4	93,116	2479.0	− 2473	6	× 77 / 319	1.4
5	93,117	2496.1	− 2502	−5.9	× 45 / 319	−0.8
6	93,120	2577.6	− 2531	46.6	× 33 / 319	4.8
7	93,121	2543.1	− 2552	−8.9	× 33 / 319	−0.9
8	93,124	2573.0	− 2567	6	× 57 / 319	1.1
Sum, rounded to a whole point						10

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	86,529	2460.5	− 2432	28.5	× 68 / 355	5.5
4	86,532	2511.1	− 2473	38.1	× 75 / 355	8
5	86,534	2497.0	− 2502	−5	× 81 / 355	−1.1
6	86,535	2556.8	− 2531	25.8	× 47 / 355	3.4
7	86,538	2534.8	− 2552	−17.2	× 41 / 355	−2
8	86,539	2551.5	− 2567	−15.5	× 43 / 355	−1.9
Sum, rounded to a whole point						12

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	88,924	2473.6	− 2432	41.6	× 54 / 348	6.5
4	88,926	2522.1	− 2473	49.1	× 69 / 348	9.7
5	88,928	2544.0	− 2502	42	× 75 / 348	9.1
6	88,931	2548.6	− 2531	17.6	× 74 / 348	3.7
7	88,933	2585.0	− 2552	33	× 44 / 348	4.2
8	88,935	2579.4	− 2567	12.4	× 32 / 348	1.1
Sum, rounded to a whole point						34

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	89,142	2465.0	− 2432	33	× 56 / 410	4.5
4	89,145	2528.0	− 2473	55	× 63 / 410	8.5
5	89,146	2524.8	− 2502	22.8	× 77 / 410	4.3
6	89,149	2583.0	− 2531	52	× 88 / 410	11.2
7	89,150	2569.7	− 2552	17.7	× 82 / 410	3.5
8	89,153	2590.2	− 2567	23.2	× 44 / 410	2.5
Sum, rounded to a whole point						34

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	89,745	2475.3	− 2432	43.3	× 60 / 436	6
4	89,746	2502.9	− 2473	29.9	× 56 / 436	3.8
5	89,747	2531.3	− 2502	29.3	× 71 / 436	4.8
6	89,748	2542.3	− 2531	11.3	× 90 / 436	2.3
7	89,749	2589.8	− 2552	37.8	× 77 / 436	6.7
8	89,750	2585.5	− 2567	18.5	× 82 / 436	3.5
Sum, rounded to a whole point						27

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	90,005	2461.7	− 2432	29.7	× 46 / 307	4.5
4	90,006	2521.8	− 2473	48.8	× 53 / 307	8.4
5	90,007	2536.8	− 2502	34.8	× 59 / 307	6.7
6	90,008	2541.5	− 2531	10.5	× 52 / 307	1.8
7	90,009	2506.3	− 2552	−45.7	× 42 / 307	−6.3
8	90,010	2582.8	− 2567	15.8	× 55 / 307	2.8
Sum, rounded to a whole point						18

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	89,899	2495.8	− 2432	63.8	× 62 / 333	11.9
4	89,900	2507.5	− 2473	34.5	× 47 / 333	4.9
5	89,901	2555.0	− 2502	53	× 53 / 333	8.4
6	89,902	2542.2	− 2531	11.2	× 58 / 333	2
7	89,903	2569.3	− 2552	17.3	× 63 / 333	3.3
8	89,904	2518.3	− 2567	−48.7	× 50 / 333	−7.3
Sum, rounded to a whole point						23

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	89,858	2439.5	− 2432	7.5	× 51 / 345	1.1
4	89,859	2534.4	− 2473	61.4	× 57 / 345	10.1
5	89,860	2491.4	− 2502	−10.6	× 56 / 345	−1.7
6	89,861	2544.7	− 2531	13.7	× 60 / 345	2.4
7	89,862	2580.5	− 2552	28.5	× 60 / 345	5
8	89,863	2582.4	− 2567	15.4	× 61 / 345	2.7
Sum, rounded to a whole point						20

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	89,560	2460.5	− 2432	28.5	× 53 / 345	4.4
4	89,561	2496.0	− 2473	23	× 58 / 345	3.9
5	89,562	2503.8	− 2502	1.8	× 58 / 345	0.3
6	89,563	2525.9	− 2531	−5.1	× 60 / 345	−0.9
7	89,564	2605.1	− 2552	53.1	× 62 / 345	9.5
8	89,565	2579.9	− 2567	12.9	× 54 / 345	2
Sum, rounded to a whole point						19

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. 10, 12, 34, 34, 27, 18, 23, 20, 19 → 21.9
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 2 · 2016→2017: 22 · 2017→2018: 0 · 2018→2019: 7 · 2019→2022: 9 · 2022→2023: 5 · 2023→2024: 3 · 2024→2025: 1 → average 6.1
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 6.1 × 2.66 = 16.2. Upper limit 38.1, lower limit 5.7.

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.