Sutter Peak Charter 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.

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	91,497	2389.9	− 2432	−42.1	× 19 / 67	−11.9
4	91,499	2412.6	− 2473	−60.4	× 14 / 67	−12.6
5	91,500	2507.5	− 2502	5.5	× 10 / 67	0.8
7	91,504	2492.5	− 2552	−59.5	× 15 / 67	−13.3
8	91,506	2508.4	− 2567	−58.6	× 9 / 67	−7.9
Sum, rounded to a whole point						−45

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	94,254	2361.3	− 2432	−70.7	× 37 / 189	−13.8
4	94,257	2428.2	− 2473	−44.8	× 38 / 189	−9
5	94,258	2454.9	− 2502	−47.1	× 36 / 189	−9
6	94,261	2486.4	− 2531	−44.6	× 26 / 189	−6.1
7	94,263	2551.5	− 2552	−0.5	× 30 / 189	−0.1
8	94,265	2544.4	− 2567	−22.6	× 22 / 189	−2.6
Sum, rounded to a whole point						−41

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	94,464	2396.5	− 2432	−35.5	× 41 / 257	−5.7
4	94,467	2415.4	− 2473	−57.6	× 40 / 257	−9
5	94,468	2483.3	− 2502	−18.7	× 49 / 257	−3.6
6	94,471	2465.4	− 2531	−65.6	× 43 / 257	−11
7	94,472	2506.8	− 2552	−45.2	× 37 / 257	−6.5
8	94,475	2574.3	− 2567	7.3	× 32 / 257	0.9
11	94,476	2597.9	− 2583	14.9	× 15 / 257	0.9
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	95,101	2387.4	− 2432	−44.6	× 36 / 298	−5.4
4	95,102	2447.5	− 2473	−25.5	× 48 / 298	−4.1
5	95,103	2481.0	− 2502	−21	× 50 / 298	−3.5
6	95,104	2505.1	− 2531	−25.9	× 52 / 298	−4.5
7	95,105	2544.3	− 2552	−7.7	× 47 / 298	−1.2
8	95,106	2534.8	− 2567	−32.2	× 42 / 298	−4.5
11	95,107	2592.3	− 2583	9.3	× 23 / 298	0.7
Sum, rounded to a whole point						−23

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	95,315	2431.4	− 2432	−0.6	× 44 / 281	−0.1
4	95,316	2480.1	− 2473	7.1	× 42 / 281	1.1
5	95,317	2505.3	− 2502	3.3	× 56 / 281	0.7
6	95,318	2523.0	− 2531	−8	× 32 / 281	−0.9
7	95,319	2556.7	− 2552	4.7	× 43 / 281	0.7
8	95,320	2576.1	− 2567	9.1	× 45 / 281	1.5
11	95,321	2623.3	− 2583	40.3	× 19 / 281	2.7
Sum, rounded to a whole point						6

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	95,213	2412.4	− 2432	−19.6	× 51 / 334	−3
4	95,214	2467.6	− 2473	−5.4	× 50 / 334	−0.8
5	95,215	2517.2	− 2502	15.2	× 49 / 334	2.2
6	95,216	2540.3	− 2531	9.3	× 59 / 334	1.6
7	95,217	2575.9	− 2552	23.9	× 45 / 334	3.2
8	95,218	2582.5	− 2567	15.5	× 40 / 334	1.9
11	95,219	2648.4	− 2583	65.4	× 40 / 334	7.8
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	95,078	2403.0	− 2432	−29	× 48 / 361	−3.9
4	95,079	2456.3	− 2473	−16.7	× 59 / 361	−2.7
5	95,080	2534.2	− 2502	32.2	× 47 / 361	4.2
6	95,081	2538.5	− 2531	7.5	× 56 / 361	1.2
7	95,082	2581.0	− 2552	29	× 63 / 361	5.1
8	95,083	2593.2	− 2567	26.2	× 44 / 361	3.2
11	95,084	2664.0	− 2583	81	× 44 / 361	9.9
Sum, rounded to a whole point						17

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	94,810	2386.2	− 2432	−45.8	× 57 / 391	−6.7
4	94,811	2466.6	− 2473	−6.4	× 56 / 391	−0.9
5	94,812	2506.3	− 2502	4.3	× 66 / 391	0.7
6	94,813	2553.2	− 2531	22.2	× 53 / 391	3
7	94,814	2571.5	− 2552	19.5	× 63 / 391	3.1
8	94,815	2597.4	− 2567	30.4	× 63 / 391	4.9
11	94,816	2619.0	− 2583	36	× 33 / 391	3
Sum, rounded to a whole point						7

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −45, −41, −34, −23, 6, 13, 17, 7 → −12.5
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2016→2017: 4 · 2017→2018: 7 · 2018→2019: 11 · 2019→2022: 29 · 2022→2023: 7 · 2023→2024: 4 · 2024→2025: 10 → average 10.3
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 10.3 × 2.66 = 27.4. Upper limit 14.9, lower limit −39.9.

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. From 2015–16, 2016–17, 2017–18, 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25, 2025–26.