Sutter: english · Schoolio

The shaded band is this county'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	98,428	2398.2	− 2432	−33.8	× 1623 / 11062	−5
4	98,431	2438.9	− 2473	−34.1	× 1680 / 11062	−5.2
5	98,432	2481.0	− 2502	−21	× 1594 / 11062	−3
6	98,435	2504.7	− 2531	−26.3	× 1597 / 11062	−3.8
7	98,436	2522.2	− 2552	−29.8	× 1619 / 11062	−4.4
8	98,439	2542.3	− 2567	−24.7	× 1605 / 11062	−3.6
11	98,440	2561.0	− 2583	−22	× 1344 / 11062	−2.7
Sum, rounded to a whole point						−28

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	91,162	2402.0	− 2432	−30	× 1597 / 11272	−4.3
4	91,165	2447.8	− 2473	−25.2	× 1670 / 11272	−3.7
5	91,166	2486.7	− 2502	−15.3	× 1665 / 11272	−2.3
6	91,168	2504.6	− 2531	−26.4	× 1580 / 11272	−3.7
7	91,171	2539.1	− 2552	−12.9	× 1613 / 11272	−1.8
8	91,172	2550.5	− 2567	−16.5	× 1602 / 11272	−2.3
11	91,175	2584.5	− 2583	1.5	× 1545 / 11272	0.2
Sum, rounded to a whole point						−18

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,920	2401.2	− 2432	−30.8	× 1656 / 11794	−4.3
4	93,922	2440.7	− 2473	−32.3	× 1695 / 11794	−4.6
5	93,925	2479.8	− 2502	−22.2	× 1746 / 11794	−3.3
6	93,926	2501.8	− 2531	−29.2	× 1779 / 11794	−4.4
7	93,929	2532.1	− 2552	−19.9	× 1684 / 11794	−2.8
8	93,931	2549.3	− 2567	−17.7	× 1686 / 11794	−2.5
11	93,932	2584.8	− 2583	1.8	× 1548 / 11794	0.2
Sum, rounded to a whole point						−22

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	94,134	2409.4	− 2432	−22.6	× 1592 / 12096	−3
4	94,135	2448.3	− 2473	−24.7	× 1738 / 12096	−3.5
5	94,138	2481.1	− 2502	−20.9	× 1768 / 12096	−3.1
6	94,139	2503.3	− 2531	−27.7	× 1750 / 12096	−4
7	94,142	2534.0	− 2552	−18	× 1887 / 12096	−2.8
8	94,143	2538.8	− 2567	−28.2	× 1704 / 12096	−4
11	94,146	2592.6	− 2583	9.6	× 1657 / 12096	1.3
Sum, rounded to a whole point						−19

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	94,753	2415.7	− 2432	−16.3	× 1740 / 12809	−2.2
4	94,754	2453.8	− 2473	−19.2	× 1703 / 12809	−2.6
5	94,755	2484.9	− 2502	−17.1	× 1812 / 12809	−2.4
6	94,756	2505.8	− 2531	−25.2	× 1873 / 12809	−3.7
7	94,757	2543.9	− 2552	−8.1	× 1954 / 12809	−1.2
8	94,758	2550.6	− 2567	−16.4	× 1990 / 12809	−2.5
11	94,759	2588.6	− 2583	5.6	× 1737 / 12809	0.8
Sum, rounded to a whole point						−14

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	92,724	2416.7	− 2432	−15.3	× 345 / 3397	−1.6
4	92,725	2458.2	− 2473	−14.8	× 338 / 3397	−1.5
5	92,726	2498.5	− 2502	−3.5	× 351 / 3397	−0.4
6	92,727	2519.0	− 2531	−12	× 373 / 3397	−1.3
7	92,728	2552.9	− 2552	0.9	× 449 / 3397	0.1
8	92,729	2554.3	− 2567	−12.7	× 452 / 3397	−1.7
11	92,730	2581.0	− 2583	−2	× 1089 / 3397	−0.6
Sum, rounded to a whole point						−7

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	94,977	2402.6	− 2432	−29.4	× 1668 / 12295	−4
4	94,978	2441.5	− 2473	−31.5	× 1771 / 12295	−4.5
5	94,979	2477.3	− 2502	−24.7	× 1762 / 12295	−3.5
6	94,980	2500.9	− 2531	−30.1	× 1771 / 12295	−4.3
7	94,981	2531.0	− 2552	−21	× 1716 / 12295	−2.9
8	94,982	2541.7	− 2567	−25.3	× 1848 / 12295	−3.8
11	94,983	2578.2	− 2583	−4.8	× 1759 / 12295	−0.7
Sum, rounded to a whole point						−24

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	94,877	2401.2	− 2432	−30.8	× 1785 / 12353	−4.5
4	94,878	2441.1	− 2473	−31.9	× 1693 / 12353	−4.4
5	94,879	2478.6	− 2502	−23.4	× 1772 / 12353	−3.4
6	94,880	2500.3	− 2531	−30.7	× 1766 / 12353	−4.4
7	94,881	2528.7	− 2552	−23.3	× 1802 / 12353	−3.4
8	94,882	2546.6	− 2567	−20.4	× 1766 / 12353	−2.9
11	94,883	2589.3	− 2583	6.3	× 1769 / 12353	0.9
Sum, rounded to a whole point						−22

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	94,750	2399.5	− 2432	−32.5	× 1723 / 12594	−4.4
4	94,751	2442.9	− 2473	−30.1	× 1838 / 12594	−4.4
5	94,752	2477.8	− 2502	−24.2	× 1711 / 12594	−3.3
6	94,753	2500.7	− 2531	−30.3	× 1824 / 12594	−4.4
7	94,754	2526.4	− 2552	−25.6	× 1866 / 12594	−3.8
8	94,755	2541.3	− 2567	−25.7	× 1833 / 12594	−3.7
11	94,756	2581.8	− 2583	−1.2	× 1799 / 12594	−0.2
Sum, rounded to a whole point						−24

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	94,480	2395.1	− 2432	−36.9	× 1899 / 12983	−5.4
4	94,481	2446.9	− 2473	−26.1	× 1801 / 12983	−3.6
5	94,482	2486.4	− 2502	−15.6	× 1909 / 12983	−2.3
6	94,483	2502.8	− 2531	−28.2	× 1793 / 12983	−3.9
7	94,484	2532.4	− 2552	−19.6	× 1937 / 12983	−2.9
8	94,485	2547.1	− 2567	−19.9	× 1898 / 12983	−2.9
11	94,486	2592.0	− 2583	9	× 1746 / 12983	1.2
Sum, rounded to a whole point						−20

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	94,082	2400.3	− 2432	−31.7	× 1877 / 13161	−4.5
4	94,083	2441.7	− 2473	−31.3	× 1938 / 13161	−4.6
5	94,084	2481.3	− 2502	−20.7	× 1833 / 13161	−2.9
6	94,085	2504.3	− 2531	−26.7	× 1983 / 13161	−4
7	94,086	2530.4	− 2552	−21.6	× 1863 / 13161	−3.1
8	94,087	2548.4	− 2567	−18.6	× 1944 / 13161	−2.7
11	94,088	2584.9	− 2583	1.9	× 1723 / 13161	0.2
Sum, rounded to a whole point						−22

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −28, −18, −22, −19, −14, −7, −24, −22, −24, −20, −22 → −20
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 10 · 2016→2017: 4 · 2017→2018: 3 · 2018→2019: 5 · 2019→2021: 7 · 2021→2022: 17 · 2022→2023: 2 · 2023→2024: 2 · 2024→2025: 4 · 2025→2026: 2 → average 5.6
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 5.6 × 2.66 = 14.9. Upper limit −5.1, lower limit −34.9.

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 county, 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.