Mariana Academy: 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	69,776	2387.1	− 2432	−44.9	× 64 / 391	−7.3
4	69,778	2428.8	− 2473	−44.2	× 64 / 391	−7.2
5	69,780	2451.1	− 2502	−50.9	× 67 / 391	−8.7
6	69,782	2490.8	− 2531	−40.2	× 62 / 391	−6.4
7	69,784	2503.7	− 2552	−48.3	× 69 / 391	−8.5
8	69,786	2525.2	− 2567	−41.8	× 65 / 391	−6.9
Sum, rounded to a whole point						−45

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	64,683	2402.2	− 2432	−29.8	× 75 / 387	−5.8
4	64,685	2432.2	− 2473	−40.8	× 63 / 387	−6.6
5	64,688	2461.8	− 2502	−40.2	× 64 / 387	−6.6
6	64,689	2486.5	− 2531	−44.5	× 62 / 387	−7.1
7	64,691	2534.3	− 2552	−17.7	× 56 / 387	−2.6
8	64,694	2546.7	− 2567	−20.3	× 67 / 387	−3.5
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	66,508	2424.7	− 2432	−7.3	× 72 / 434	−1.2
4	66,510	2418.1	− 2473	−54.9	× 83 / 434	−10.5
5	66,511	2422.2	− 2502	−79.8	× 78 / 434	−14.3
6	66,513	2453.5	− 2531	−77.5	× 69 / 434	−12.3
7	66,516	2504.8	− 2552	−47.2	× 70 / 434	−7.6
8	66,518	2535.7	− 2567	−31.3	× 62 / 434	−4.5
Sum, rounded to a whole point						−50

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	66,579	2401.0	− 2432	−31	× 64 / 420	−4.7
4	66,581	2468.6	− 2473	−4.4	× 64 / 420	−0.7
5	66,583	2436.3	− 2502	−65.7	× 77 / 420	−12
6	66,585	2461.1	− 2531	−69.9	× 83 / 420	−13.8
7	66,587	2503.6	− 2552	−48.4	× 72 / 420	−8.3
8	66,589	2516.4	− 2567	−50.6	× 60 / 420	−7.2
Sum, rounded to a whole point						−47

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	67,006	2397.3	− 2432	−34.7	× 74 / 454	−5.7
4	67,007	2434.6	− 2473	−38.4	× 63 / 454	−5.3
5	67,008	2487.7	− 2502	−14.3	× 74 / 454	−2.3
6	67,009	2475.0	− 2531	−56	× 78 / 454	−9.6
7	67,010	2507.4	− 2552	−44.6	× 88 / 454	−8.6
8	67,011	2502.5	− 2567	−64.5	× 77 / 454	−10.9
Sum, rounded to a whole point						−43

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	67,102	2367.2	− 2432	−64.8	× 64 / 433	−9.6
4	67,103	2370.4	− 2473	−102.6	× 67 / 433	−15.9
5	67,104	2414.6	− 2502	−87.4	× 74 / 433	−14.9
6	67,105	2448.1	− 2531	−82.9	× 86 / 433	−16.5
7	67,106	2483.8	− 2552	−68.2	× 69 / 433	−10.9
8	67,107	2485.3	− 2567	−81.7	× 73 / 433	−13.8
Sum, rounded to a whole point						−81

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	67,112	2351.5	− 2432	−80.5	× 94 / 508	−14.9
4	67,113	2371.2	− 2473	−101.8	× 70 / 508	−14
5	67,114	2404.3	− 2502	−97.7	× 77 / 508	−14.8
6	67,115	2419.0	− 2531	−112	× 82 / 508	−18.1
7	67,116	2434.6	− 2552	−117.4	× 95 / 508	−22
8	67,117	2479.7	− 2567	−87.3	× 90 / 508	−15.5
Sum, rounded to a whole point						−99

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	67,098	2385.2	− 2432	−46.8	× 69 / 526	−6.1
4	67,099	2392.3	− 2473	−80.7	× 102 / 526	−15.6
5	67,100	2412.3	− 2502	−89.7	× 81 / 526	−13.8
6	67,101	2459.8	− 2531	−71.2	× 94 / 526	−12.7
7	67,102	2437.4	− 2552	−114.6	× 82 / 526	−17.9
8	67,103	2489.9	− 2567	−77.1	× 98 / 526	−14.4
Sum, rounded to a whole point						−81

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	66,850	2377.4	− 2432	−54.6	× 78 / 531	−8
4	66,851	2403.1	− 2473	−69.9	× 87 / 531	−11.5
5	66,852	2401.4	− 2502	−100.6	× 104 / 531	−19.7
6	66,853	2441.3	− 2531	−89.7	× 84 / 531	−14.2
7	66,854	2459.7	− 2552	−92.3	× 100 / 531	−17.4
8	66,855	2451.0	− 2567	−116	× 78 / 531	−17
Sum, rounded to a whole point						−88

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −45, −32, −50, −47, −43, −81, −99, −81, −88 → −62.9
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 13 · 2016→2017: 18 · 2017→2018: 3 · 2018→2019: 4 · 2019→2022: 38 · 2022→2023: 18 · 2023→2024: 18 · 2024→2025: 7 → average 14.9
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 14.9 × 2.66 = 39.6. Upper limit −23.3, lower limit −102.5.

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.