Mountain Valley 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	99,941	2395.0	− 2432	−37	× 19 / 156	−4.5
4	99,943	2456.8	− 2473	−16.2	× 21 / 156	−2.2
5	99,945	2471.8	− 2502	−30.2	× 24 / 156	−4.6
6	99,946	2456.8	− 2531	−74.2	× 23 / 156	−10.9
7	99,949	2558.2	− 2552	6.2	× 25 / 156	1
8	99,951	2541.1	− 2567	−25.9	× 18 / 156	−3
11	99,952	2513.3	− 2583	−69.7	× 26 / 156	−11.6
Sum, rounded to a whole point						−36

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	92,669	2396.1	− 2432	−35.9	× 27 / 155	−6.3
4	92,670	2457.5	− 2473	−15.5	× 21 / 155	−2.1
5	92,673	2475.1	− 2502	−26.9	× 21 / 155	−3.6
6	92,674	2526.7	− 2531	−4.3	× 23 / 155	−0.6
7	92,676	2529.6	− 2552	−22.4	× 23 / 155	−3.3
8	92,679	2573.8	− 2567	6.8	× 19 / 155	0.8
11	92,680	2593.1	− 2583	10.1	× 21 / 155	1.4
Sum, rounded to a whole point						−14

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	95,439	2403.1	− 2432	−28.9	× 22 / 146	−4.4
4	95,441	2440.2	− 2473	−32.8	× 26 / 146	−5.8
5	95,443	2484.0	− 2502	−18	× 20 / 146	−2.5
6	95,444	2532.6	− 2531	1.6	× 20 / 146	0.2
7	95,447	2576.3	− 2552	24.3	× 20 / 146	3.3
8	95,448	2540.3	− 2567	−26.7	× 24 / 146	−4.4
11	95,450	2605.8	− 2583	22.8	× 14 / 146	2.2
Sum, rounded to a whole point						−11

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	95,609	2418.8	− 2432	−13.2	× 13 / 142	−1.2
4	95,610	2381.5	− 2473	−91.5	× 28 / 142	−18
5	95,613	2466.5	− 2502	−35.5	× 26 / 142	−6.5
6	95,614	2487.9	− 2531	−43.1	× 19 / 142	−5.8
7	95,617	2541.3	− 2552	−10.7	× 21 / 142	−1.6
8	95,618	2562.8	− 2567	−4.2	× 20 / 142	−0.6
11	95,621	2578.0	− 2583	−5	× 15 / 142	−0.5
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	96,285	2406.0	− 2432	−26	× 16 / 143	−2.9
4	96,286	2487.0	− 2473	14	× 12 / 143	1.2
5	96,287	2448.6	− 2502	−53.4	× 27 / 143	−10.1
6	96,288	2520.1	− 2531	−10.9	× 30 / 143	−2.3
7	96,289	2576.5	− 2552	24.5	× 17 / 143	2.9
8	96,290	2586.9	− 2567	19.9	× 21 / 143	2.9
11	96,291	2557.5	− 2583	−25.5	× 20 / 143	−3.6
Sum, rounded to a whole point						−12

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	94,190	2394.5	− 2432	−37.5	× 24 / 128	−7
4	94,191	2448.3	− 2473	−24.7	× 19 / 128	−3.7
5	94,192	2444.2	− 2502	−57.8	× 18 / 128	−8.1
6	94,193	2554.6	− 2531	23.6	× 17 / 128	3.1
8	94,195	2601.0	− 2567	34	× 24 / 128	6.4
11	94,196	2623.0	− 2583	40	× 26 / 128	8.1
Sum, rounded to a whole point						−1

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	96,459	2458.2	− 2432	26.2	× 21 / 141	3.9
4	96,460	2440.0	− 2473	−33	× 23 / 141	−5.4
5	96,461	2501.7	− 2502	−0.3	× 19 / 141	0
6	96,462	2493.3	− 2531	−37.7	× 19 / 141	−5.1
7	96,463	2635.7	− 2552	83.7	× 18 / 141	10.7
8	96,464	2577.9	− 2567	10.9	× 22 / 141	1.7
11	96,465	2639.8	− 2583	56.8	× 19 / 141	7.7
Sum, rounded to a whole point						13

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	96,298	2442.9	− 2432	10.9	× 24 / 150	1.7
4	96,299	2448.7	− 2473	−24.3	× 23 / 150	−3.7
5	96,300	2518.7	− 2502	16.7	× 24 / 150	2.7
6	96,301	2548.5	− 2531	17.5	× 19 / 150	2.2
7	96,302	2557.4	− 2552	5.4	× 19 / 150	0.7
8	96,303	2633.4	− 2567	66.4	× 21 / 150	9.3
11	96,304	2581.7	− 2583	−1.3	× 20 / 150	−0.2
Sum, rounded to a whole point						13

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	96,174	2447.0	− 2432	15	× 30 / 165	2.7
4	96,175	2458.7	− 2473	−14.3	× 24 / 165	−2.1
5	96,176	2524.7	− 2502	22.7	× 25 / 165	3.4
6	96,177	2540.3	− 2531	9.3	× 23 / 165	1.3
7	96,178	2598.6	− 2552	46.6	× 19 / 165	5.4
8	96,179	2574.0	− 2567	7	× 18 / 165	0.8
11	96,180	2584.1	− 2583	1.1	× 26 / 165	0.2
Sum, rounded to a whole point						12

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	95,920	2394.9	− 2432	−37.1	× 28 / 175	−5.9
4	95,921	2466.4	− 2473	−6.6	× 28 / 175	−1.1
5	95,922	2515.4	− 2502	13.4	× 28 / 175	2.1
6	95,923	2533.4	− 2531	2.4	× 28 / 175	0.4
7	95,924	2563.0	− 2552	11	× 21 / 175	1.3
8	95,925	2625.5	− 2567	58.5	× 20 / 175	6.7
11	95,926	2651.0	− 2583	68	× 22 / 175	8.5
Sum, rounded to a whole point						12

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −36, −14, −11, −34, −12, −1, 13, 13, 12, 12 → −5.8
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 22 · 2016→2017: 3 · 2017→2018: 23 · 2018→2019: 22 · 2019→2021: 11 · 2021→2022: 14 · 2022→2023: 0 · 2023→2024: 1 · 2024→2025: 0 → average 10.7
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 10.7 × 2.66 = 28.5. Upper limit 22.7, lower limit −34.3.

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.