Saint Helena Unified: 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	47,123	2429.5	− 2432	−2.5	× 71 / 626	−0.3
4	47,126	2464.2	− 2473	−8.8	× 80 / 626	−1.1
5	47,127	2527.5	− 2502	25.5	× 77 / 626	3.1
6	47,130	2547.8	− 2531	16.8	× 92 / 626	2.5
7	47,131	2547.3	− 2552	−4.7	× 91 / 626	−0.7
8	47,134	2571.1	− 2567	4.1	× 92 / 626	0.6
11	47,135	2661.8	− 2583	78.8	× 123 / 626	15.5
Sum, rounded to a whole point						20

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	43,811	2444.8	− 2432	12.8	× 75 / 606	1.6
4	43,814	2484.4	− 2473	11.4	× 71 / 606	1.3
5	43,815	2515.0	− 2502	13	× 81 / 606	1.7
6	43,818	2555.5	− 2531	24.5	× 83 / 606	3.4
7	43,819	2605.0	− 2552	53	× 92 / 606	8
8	43,822	2564.4	− 2567	−2.6	× 87 / 606	−0.4
11	43,824	2669.4	− 2583	86.4	× 117 / 606	16.7
Sum, rounded to a whole point						32

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	44,887	2426.9	− 2432	−5.1	× 75 / 584	−0.7
4	44,888	2483.4	− 2473	10.4	× 74 / 584	1.3
5	44,890	2521.7	− 2502	19.7	× 78 / 584	2.6
6	44,893	2536.3	− 2531	5.3	× 88 / 584	0.8
7	44,895	2587.6	− 2552	35.6	× 82 / 584	5
8	44,896	2592.4	− 2567	25.4	× 87 / 584	3.8
11	44,899	2688.9	− 2583	105.9	× 100 / 584	18.1
Sum, rounded to a whole point						31

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	44,898	2449.5	− 2432	17.5	× 75 / 590	2.2
4	44,899	2477.1	− 2473	4.1	× 75 / 590	0.5
5	44,901	2509.5	− 2502	7.5	× 74 / 590	0.9
6	44,903	2531.9	− 2531	0.9	× 89 / 590	0.1
7	44,905	2589.4	− 2552	37.4	× 85 / 590	5.4
8	44,907	2598.8	− 2567	31.8	× 83 / 590	4.5
11	44,909	2689.6	− 2583	106.6	× 109 / 590	19.7
Sum, rounded to a whole point						33

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	45,020	2442.3	− 2432	10.3	× 73 / 601	1.3
4	45,021	2497.1	− 2473	24.1	× 81 / 601	3.2
5	45,022	2523.4	− 2502	21.4	× 78 / 601	2.8
6	45,023	2541.2	− 2531	10.2	× 78 / 601	1.3
7	45,024	2583.1	− 2552	31.1	× 91 / 601	4.7
8	45,025	2600.4	− 2567	33.4	× 90 / 601	5
11	45,026	2676.8	− 2583	93.8	× 110 / 601	17.2
Sum, rounded to a whole point						35

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
11	43,739	2670.9	− 2583	87.9	× 104 / 104	87.9
Sum, rounded to a whole point						88

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	44,764	2429.6	− 2432	−2.4	× 88 / 582	−0.4
4	44,765	2492.6	− 2473	19.6	× 65 / 582	2.2
5	44,766	2527.3	− 2502	25.3	× 80 / 582	3.5
6	44,767	2516.8	− 2531	−14.2	× 76 / 582	−1.9
7	44,768	2590.7	− 2552	38.7	× 83 / 582	5.5
8	44,769	2589.2	− 2567	22.2	× 80 / 582	3.1
11	44,770	2652.5	− 2583	69.5	× 110 / 582	13.1
Sum, rounded to a whole point						25

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	44,740	2453.3	− 2432	21.3	× 84 / 596	3
4	44,741	2510.9	− 2473	37.9	× 86 / 596	5.5
5	44,742	2539.3	− 2502	37.3	× 71 / 596	4.4
6	44,743	2516.9	− 2531	−14.1	× 81 / 596	−1.9
7	44,744	2553.0	− 2552	1	× 78 / 596	0.1
8	44,745	2606.2	− 2567	39.2	× 80 / 596	5.3
11	44,746	2650.6	− 2583	67.6	× 116 / 596	13.2
Sum, rounded to a whole point						30

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	44,577	2454.4	− 2432	22.4	× 73 / 577	2.8
4	44,578	2501.2	− 2473	28.2	× 88 / 577	4.3
5	44,579	2521.6	− 2502	19.6	× 87 / 577	3
6	44,580	2536.5	− 2531	5.5	× 71 / 577	0.7
7	44,581	2568.9	− 2552	16.9	× 82 / 577	2.4
8	44,582	2567.1	− 2567	0.1	× 82 / 577	0
11	44,583	2639.3	− 2583	56.3	× 94 / 577	9.2
Sum, rounded to a whole point						22

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	44,313	2454.8	− 2432	22.8	× 61 / 563	2.5
4	44,314	2514.1	− 2473	41.1	× 78 / 563	5.7
5	44,315	2539.1	− 2502	37.1	× 86 / 563	5.7
6	44,316	2519.4	− 2531	−11.6	× 90 / 563	−1.9
7	44,317	2553.8	− 2552	1.8	× 71 / 563	0.2
8	44,318	2568.4	− 2567	1.4	× 82 / 563	0.2
11	44,319	2621.0	− 2583	38	× 95 / 563	6.4
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. 20, 32, 31, 33, 35, 88, 25, 30, 22, 19 → 33.5
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 12 · 2016→2017: 1 · 2017→2018: 2 · 2018→2019: 2 · 2019→2021: 53 · 2021→2022: 63 · 2022→2023: 5 · 2023→2024: 8 · 2024→2025: 3 → average 16.6
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 16.6 × 2.66 = 44.2. Upper limit 77.7, lower limit −10.7.

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 — 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.