Twin Rivers 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	63,091	2370.3	− 2432	−61.7	× 2239 / 13500	−10.2
4	63,092	2409.6	− 2473	−63.4	× 2193 / 13500	−10.3
5	63,095	2445.3	− 2502	−56.7	× 2089 / 13500	−8.8
6	63,096	2471.7	− 2531	−59.3	× 1839 / 13500	−8.1
7	63,099	2488.6	− 2552	−63.4	× 1981 / 13500	−9.3
8	63,100	2508.3	− 2567	−58.7	× 1963 / 13500	−8.5
11	63,103	2550.4	− 2583	−32.6	× 1196 / 13500	−2.9
Sum, rounded to a whole point						−58

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	58,519	2379.0	− 2432	−53	× 2096 / 13577	−8.2
4	58,522	2410.8	− 2473	−62.2	× 2215 / 13577	−10.1
5	58,524	2453.6	− 2502	−48.4	× 2131 / 13577	−7.6
6	58,526	2479.4	− 2531	−51.6	× 2002 / 13577	−7.6
7	58,527	2495.8	− 2552	−56.2	× 1949 / 13577	−8.1
8	58,530	2515.0	− 2567	−52	× 1865 / 13577	−7.1
11	58,531	2549.5	− 2583	−33.5	× 1319 / 13577	−3.3
Sum, rounded to a whole point						−52

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	60,218	2381.4	− 2432	−50.6	× 2053 / 13546	−7.7
4	60,221	2419.9	− 2473	−53.1	× 2021 / 13546	−7.9
5	60,222	2445.1	− 2502	−56.9	× 2163 / 13546	−9.1
6	60,224	2487.1	− 2531	−43.9	× 1994 / 13546	−6.5
7	60,227	2499.9	− 2552	−52.1	× 2043 / 13546	−7.9
8	60,229	2515.4	− 2567	−51.6	× 1909 / 13546	−7.3
11	60,230	2545.4	− 2583	−37.6	× 1363 / 13546	−3.8
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	60,343	2394.0	− 2432	−38	× 1976 / 13467	−5.6
4	60,345	2429.1	− 2473	−43.9	× 2035 / 13467	−6.6
5	60,347	2458.8	− 2502	−43.2	× 1984 / 13467	−6.4
6	60,349	2486.1	− 2531	−44.9	× 2077 / 13467	−6.9
7	60,351	2501.9	− 2552	−50.1	× 2097 / 13467	−7.8
8	60,353	2520.8	− 2567	−46.2	× 2011 / 13467	−6.9
11	60,355	2554.4	− 2583	−28.6	× 1287 / 13467	−2.7
Sum, rounded to a whole point						−43

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	60,594	2396.2	− 2432	−35.8	× 2010 / 13269	−5.4
4	60,595	2435.7	− 2473	−37.3	× 1948 / 13269	−5.5
5	60,596	2468.3	− 2502	−33.7	× 1981 / 13269	−5
6	60,597	2497.5	− 2531	−33.5	× 1863 / 13269	−4.7
7	60,598	2508.6	− 2552	−43.4	× 2178 / 13269	−7.1
8	60,599	2524.1	− 2567	−42.9	× 2027 / 13269	−6.6
11	60,600	2564.6	− 2583	−18.4	× 1262 / 13269	−1.8
Sum, rounded to a whole point						−36

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
11	59,219	2469.1	− 2583	−113.9	× 16 / 16	−113.9
Sum, rounded to a whole point						−114

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	60,688	2375.5	− 2432	−56.5	× 1912 / 12553	−8.6
4	60,689	2413.8	− 2473	−59.2	× 1867 / 12553	−8.8
5	60,690	2453.1	− 2502	−48.9	× 1890 / 12553	−7.4
6	60,691	2483.7	− 2531	−47.3	× 1748 / 12553	−6.6
7	60,692	2497.5	− 2552	−54.5	× 1706 / 12553	−7.4
8	60,693	2503.7	− 2567	−63.3	× 1922 / 12553	−9.7
11	60,694	2520.7	− 2583	−62.3	× 1508 / 12553	−7.5
Sum, rounded to a whole point						−56

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	60,633	2379.2	− 2432	−52.8	× 1810 / 12382	−7.7
4	60,634	2416.7	− 2473	−56.3	× 1909 / 12382	−8.7
5	60,635	2454.8	− 2502	−47.2	× 1848 / 12382	−7
6	60,636	2477.0	− 2531	−54	× 1840 / 12382	−8
7	60,637	2491.2	− 2552	−60.8	× 1771 / 12382	−8.7
8	60,638	2510.5	− 2567	−56.5	× 1672 / 12382	−7.6
11	60,639	2540.2	− 2583	−42.8	× 1532 / 12382	−5.3
Sum, rounded to a whole point						−53

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	60,580	2381.8	− 2432	−50.2	× 1780 / 12537	−7.1
4	60,581	2415.2	− 2473	−57.8	× 1832 / 12537	−8.4
5	60,582	2459.2	− 2502	−42.8	× 1926 / 12537	−6.6
6	60,583	2490.7	− 2531	−40.3	× 1827 / 12537	−5.9
7	60,584	2488.1	− 2552	−63.9	× 1875 / 12537	−9.6
8	60,585	2508.0	− 2567	−59	× 1819 / 12537	−8.6
11	60,586	2534.2	− 2583	−48.8	× 1478 / 12537	−5.8
Sum, rounded to a whole point						−52

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	60,333	2393.4	− 2432	−38.6	× 1924 / 12904	−5.8
4	60,334	2429.8	− 2473	−43.2	× 1822 / 12904	−6.1
5	60,335	2461.8	− 2502	−40.2	× 1860 / 12904	−5.8
6	60,336	2498.8	− 2531	−32.2	× 1937 / 12904	−4.8
7	60,337	2505.1	− 2552	−46.9	× 1918 / 12904	−7
8	60,338	2511.7	− 2567	−55.3	× 1916 / 12904	−8.2
11	60,339	2547.8	− 2583	−35.2	× 1527 / 12904	−4.2
Sum, rounded to a whole point						−42

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	60,268	2383.4	− 2432	−48.6	× 1773 / 12779	−6.7
4	60,269	2428.2	− 2473	−44.8	× 1931 / 12779	−6.8
5	60,270	2465.8	− 2502	−36.2	× 1805 / 12779	−5.1
6	60,271	2490.5	− 2531	−40.5	× 1853 / 12779	−5.9
7	60,272	2502.6	− 2552	−49.4	× 2035 / 12779	−7.9
8	60,273	2518.8	− 2567	−48.2	× 1928 / 12779	−7.3
11	60,274	2549.9	− 2583	−33.1	× 1454 / 12779	−3.8
Sum, rounded to a whole point						−43

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −58, −52, −50, −43, −36, −114, −56, −53, −52, −42, −43 → −54.5
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 6 · 2016→2017: 2 · 2017→2018: 7 · 2018→2019: 7 · 2019→2021: 78 · 2021→2022: 58 · 2022→2023: 3 · 2023→2024: 1 · 2024→2025: 10 · 2025→2026: 1 → average 17.3
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 17.3 × 2.66 = 46. Upper limit −8.5, lower limit −100.5.

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 — 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.

Twin Rivers Unified

Step 1 · Each year's result

2015 from sb_ca2015_1_csv_v3.zip

2016 from sb_ca2016_1_csv_v3.zip

2017 from sb_ca2017_1_csv_v2.zip

2018 from sb_ca2018_1_csv_v3.zip

2019 from sb_ca2019_1_csv_v4.zip

2021 from sb_ca2021_1_csv_v2.zip

2022 from sb_ca2022_1_csv_v1.zip

2023 from sb_ca2023_1_csv_v1.zip

2024 from sb_ca2024_1_csv_v1.zip

2025 from sb_ca2025_1_csv_v1.zip

2026 from sb_ca2026_1_csv_v1.zip

Step 2 · The average and the normal range

Step 3 · Free or reduced-price meals

Schools in Twin Rivers Unified

Elementary schools

K–8 schools

Middle schools

High schools

Alternative and special schools

Charter schools in Twin Rivers Unified

K–8 schools

Middle schools

Middle and high schools

High schools

K–12 schools