Orcutt Academy Charter: math

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	85,248	2364.4	− 2436	−71.6	× 16 / 234	−4.9
4	85,249	2439.8	− 2485	−45.2	× 13 / 234	−2.5
5	85,252	2487.7	− 2528	−40.3	× 15 / 234	−2.6
6	85,253	2513.1	− 2552	−38.9	× 14 / 234	−2.3
7	85,256	2569.1	− 2567	2.1	× 16 / 234	0.1
8	85,257	2557.0	− 2586	−29	× 14 / 234	−1.7
11	85,260	2607.8	− 2628	−20.2	× 146 / 234	−12.6
Sum, rounded to a whole point						−27

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	79,056	2406.8	− 2436	−29.2	× 12 / 225	−1.6
4	79,058	2450.9	− 2485	−34.1	× 14 / 225	−2.1
5	79,060	2503.2	− 2528	−24.8	× 12 / 225	−1.3
6	79,062	2505.8	− 2552	−46.2	× 16 / 225	−3.3
7	79,064	2558.9	− 2567	−8.1	× 18 / 225	−0.6
8	79,067	2566.0	− 2586	−20	× 16 / 225	−1.4
11	79,068	2642.1	− 2628	14.1	× 137 / 225	8.6
Sum, rounded to a whole point						−2

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	81,211	2440.6	− 2436	4.6	× 26 / 266	0.4
4	81,213	2476.8	− 2485	−8.2	× 17 / 266	−0.5
5	81,215	2469.2	− 2528	−58.8	× 18 / 266	−4
6	81,217	2493.0	− 2552	−59	× 22 / 266	−4.9
7	81,219	2524.2	− 2567	−42.8	× 22 / 266	−3.5
8	81,222	2565.9	− 2586	−20.1	× 23 / 266	−1.7
11	81,224	2626.5	− 2628	−1.5	× 138 / 266	−0.8
Sum, rounded to a whole point						−15

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	81,360	2437.9	− 2436	1.9	× 22 / 262	0.2
4	81,363	2448.3	− 2485	−36.7	× 23 / 262	−3.2
5	81,364	2507.0	− 2528	−21	× 18 / 262	−1.4
6	81,367	2498.4	− 2552	−53.6	× 16 / 262	−3.3
7	81,368	2553.7	− 2567	−13.3	× 24 / 262	−1.2
8	81,371	2553.0	− 2586	−33	× 23 / 262	−2.9
11	81,372	2633.4	− 2628	5.4	× 136 / 262	2.8
Sum, rounded to a whole point						−9

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	81,897	2426.9	− 2436	−9.1	× 16 / 246	−0.6
4	81,898	2482.8	− 2485	−2.2	× 17 / 246	−0.2
5	81,899	2488.4	− 2528	−39.6	× 19 / 246	−3.1
6	81,900	2515.3	− 2552	−36.7	× 19 / 246	−2.8
7	81,901	2552.5	− 2567	−14.5	× 21 / 246	−1.2
8	81,902	2542.7	− 2586	−43.3	× 28 / 246	−4.9
11	81,903	2622.2	− 2628	−5.8	× 126 / 246	−3
Sum, rounded to a whole point						−16

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
11	80,263	2630.2	− 2628	2.2	× 118 / 118	2.2
Sum, rounded to a whole point						2

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	82,118	2425.5	− 2436	−10.5	× 14 / 239	−0.6
4	82,119	2457.1	− 2485	−27.9	× 14 / 239	−1.6
5	82,120	2501.9	− 2528	−26.1	× 16 / 239	−1.7
6	82,121	2500.3	− 2552	−51.7	× 16 / 239	−3.5
7	82,122	2591.3	− 2567	24.3	× 16 / 239	1.6
8	82,123	2581.9	− 2586	−4.1	× 16 / 239	−0.3
11	82,124	2611.7	− 2628	−16.3	× 147 / 239	−10
Sum, rounded to a whole point						−16

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	82,078	2454.7	− 2436	18.7	× 14 / 204	1.3
4	82,079	2502.0	− 2485	17	× 14 / 204	1.2
5	82,080	2464.2	− 2528	−63.8	× 16 / 204	−5
6	82,081	2571.3	− 2552	19.3	× 16 / 204	1.5
7	82,082	2551.6	− 2567	−15.4	× 16 / 204	−1.2
8	82,083	2583.0	− 2586	−3	× 16 / 204	−0.2
11	82,084	2575.5	− 2628	−52.5	× 112 / 204	−28.8
Sum, rounded to a whole point						−31

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	82,090	2422.6	− 2436	−13.4	× 14 / 242	−0.8
4	82,091	2493.7	− 2485	8.7	× 14 / 242	0.5
5	82,092	2508.5	− 2528	−19.5	× 16 / 242	−1.3
6	82,093	2522.7	− 2552	−29.3	× 15 / 242	−1.8
7	82,094	2606.4	− 2567	39.4	× 16 / 242	2.6
8	82,095	2569.0	− 2586	−17	× 16 / 242	−1.1
11	82,096	2593.2	− 2628	−34.8	× 151 / 242	−21.7
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	81,762	2441.9	− 2436	5.9	× 14 / 260	0.3
4	81,763	2459.4	− 2485	−25.6	× 14 / 260	−1.4
5	81,764	2503.5	− 2528	−24.5	× 16 / 260	−1.5
6	81,765	2565.9	− 2552	13.9	× 16 / 260	0.9
7	81,766	2550.3	− 2567	−16.7	× 15 / 260	−1
8	81,767	2622.5	− 2586	36.5	× 16 / 260	2.2
11	81,768	2601.5	− 2628	−26.5	× 169 / 260	−17.2
Sum, rounded to a whole point						−18

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −27, −2, −15, −9, −16, 2, −16, −31, −24, −18 → −15.6
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 25 · 2016→2017: 13 · 2017→2018: 6 · 2018→2019: 7 · 2019→2021: 18 · 2021→2022: 18 · 2022→2023: 15 · 2023→2024: 7 · 2024→2025: 6 → average 12.8
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 12.8 × 2.66 = 34. Upper limit 18.4, lower limit −49.6.

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.