Sutter County Office of Education: 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	98,444	2298.0	− 2432	−134	× 15 / 71	−28.3
4	98,447	2296.0	− 2473	−177	× 15 / 71	−37.4
5	98,449	2328.2	− 2502	−173.8	× 13 / 71	−31.8
8	98,455	2446.6	− 2567	−120.4	× 15 / 71	−25.4
11	98,456	2446.0	− 2583	−137	× 13 / 71	−25.1
Sum, rounded to a whole point						−148

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
11	91,186	2460.9	− 2583	−122.1	× 28 / 28	−122.1
Sum, rounded to a whole point						−122

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
5	93,940	2265.8	− 2502	−236.2	× 11 / 38	−68.4
7	93,945	2371.7	− 2552	−180.3	× 12 / 38	−56.9
11	93,949	2416.1	− 2583	−166.9	× 15 / 38	−65.9
Sum, rounded to a whole point						−191

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
4	94,151	2281.8	− 2473	−191.2	× 11 / 34	−61.9
7	94,158	2354.9	− 2552	−197.1	× 12 / 34	−69.6
8	94,159	2373.7	− 2567	−193.3	× 11 / 34	−62.5
Sum, rounded to a whole point						−194

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	94,773	2416.6	− 2552	−135.4	× 14 / 46	−41.2
8	94,774	2448.3	− 2567	−118.7	× 20 / 46	−51.6
11	94,775	2448.7	− 2583	−134.3	× 12 / 46	−35
Sum, rounded to a whole point						−128

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
5	94,995	2368.5	− 2502	−133.5	× 12 / 44	−36.4
8	94,998	2390.4	− 2567	−176.6	× 17 / 44	−68.2
11	94,999	2422.5	− 2583	−160.5	× 15 / 44	−54.7
Sum, rounded to a whole point						−159

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	94,893	2276.3	− 2432	−155.7	× 12 / 44	−42.5
6	94,896	2368.9	− 2531	−162.1	× 16 / 44	−58.9
11	94,899	2392.6	− 2583	−190.4	× 16 / 44	−69.2
Sum, rounded to a whole point						−171

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
4	94,767	2283.6	− 2473	−189.4	× 14 / 32	−82.9
11	94,772	2455.8	− 2583	−127.2	× 18 / 32	−71.6
Sum, rounded to a whole point						−154

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	94,496	2283.9	− 2432	−148.1	× 15 / 15	−148.1
Sum, rounded to a whole point						−148

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
4	94,099	2295.9	− 2473	−177.1	× 11 / 32	−60.9
11	94,104	2509.2	− 2583	−73.8	× 21 / 32	−48.4
Sum, rounded to a whole point						−109

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −148, −122, −191, −194, −128, −159, −171, −154, −148, −109 → −152.4
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 26 · 2016→2017: 69 · 2017→2018: 3 · 2018→2019: 66 · 2019→2022: 31 · 2022→2023: 12 · 2023→2024: 17 · 2024→2025: 6 · 2025→2026: 39 → average 29.9
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 29.9 × 2.66 = 79.5. Upper limit −72.9, lower limit −231.9.

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 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.

Sutter County Office of Education