Ellen Ochoa Learning Center: 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	33,708	2355.0	− 2436	−81	× 145 / 983	−11.9
4	33,709	2405.6	− 2485	−79.4	× 134 / 983	−10.8
5	33,712	2438.3	− 2528	−89.7	× 116 / 983	−10.6
6	33,713	2457.7	− 2552	−94.3	× 136 / 983	−13
7	33,716	2496.6	− 2567	−70.4	× 248 / 983	−17.8
8	33,717	2495.5	− 2586	−90.5	× 204 / 983	−18.8
Sum, rounded to a whole point						−83

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	31,895	2367.6	− 2436	−68.4	× 128 / 983	−8.9
4	31,898	2411.0	− 2485	−74	× 140 / 983	−10.5
5	31,899	2414.2	− 2528	−113.8	× 131 / 983	−15.2
6	31,901	2459.9	− 2552	−92.1	× 138 / 983	−12.9
7	31,904	2486.5	− 2567	−80.5	× 198 / 983	−16.2
8	31,906	2513.8	− 2586	−72.2	× 248 / 983	−18.2
Sum, rounded to a whole point						−82

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	32,448	2379.0	− 2436	−57	× 123 / 922	−7.6
4	32,451	2410.9	− 2485	−74.1	× 124 / 922	−10
5	32,453	2427.7	− 2528	−100.3	× 132 / 922	−14.4
6	32,454	2446.3	− 2552	−105.7	× 138 / 922	−15.8
7	32,456	2494.1	− 2567	−72.9	× 205 / 922	−16.2
8	32,458	2503.0	− 2586	−83	× 200 / 922	−18
Sum, rounded to a whole point						−82

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	32,476	2368.6	− 2436	−67.4	× 109 / 877	−8.4
4	32,478	2423.8	− 2485	−61.2	× 129 / 877	−9
5	32,480	2441.5	− 2528	−86.5	× 122 / 877	−12
6	32,482	2443.0	− 2552	−109	× 137 / 877	−17
7	32,484	2451.4	− 2567	−115.6	× 187 / 877	−24.6
8	32,486	2499.9	− 2586	−86.1	× 193 / 877	−18.9
Sum, rounded to a whole point						−90

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	32,660	2395.5	− 2436	−40.5	× 138 / 901	−6.2
4	32,661	2429.0	− 2485	−56	× 105 / 901	−6.5
5	32,662	2454.6	− 2528	−73.4	× 129 / 901	−10.5
6	32,663	2442.6	− 2552	−109.4	× 130 / 901	−15.8
7	32,664	2478.8	− 2567	−88.2	× 214 / 901	−20.9
8	32,665	2491.4	− 2586	−94.6	× 185 / 901	−19.4
Sum, rounded to a whole point						−79

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	32,687	2364.5	− 2436	−71.5	× 119 / 831	−10.2
4	32,688	2409.4	− 2485	−75.6	× 117 / 831	−10.6
5	32,689	2419.4	− 2528	−108.6	× 121 / 831	−15.8
6	32,690	2440.4	− 2552	−111.6	× 129 / 831	−17.3
7	32,691	2448.2	− 2567	−118.8	× 155 / 831	−22.2
8	32,692	2455.0	− 2586	−131	× 190 / 831	−30
Sum, rounded to a whole point						−106

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	32,742	2391.0	− 2436	−45	× 109 / 806	−6.1
4	32,743	2396.1	− 2485	−88.9	× 121 / 806	−13.3
5	32,744	2427.5	− 2528	−100.5	× 120 / 806	−15
6	32,745	2435.3	− 2552	−116.7	× 129 / 806	−18.7
7	32,746	2468.6	− 2567	−98.4	× 177 / 806	−21.6
8	32,747	2451.7	− 2586	−134.3	× 150 / 806	−25
Sum, rounded to a whole point						−100

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	32,610	2405.3	− 2436	−30.7	× 101 / 799	−3.9
4	32,611	2414.7	− 2485	−70.3	× 111 / 799	−9.8
5	32,612	2441.4	− 2528	−86.6	× 111 / 799	−12
6	32,613	2458.7	− 2552	−93.3	× 121 / 799	−14.1
7	32,614	2449.4	− 2567	−117.6	× 185 / 799	−27.2
8	32,615	2474.4	− 2586	−111.6	× 170 / 799	−23.7
Sum, rounded to a whole point						−91

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	32,469	2419.3	− 2436	−16.7	× 100 / 753	−2.2
4	32,470	2448.0	− 2485	−37	× 103 / 753	−5.1
5	32,471	2462.4	− 2528	−65.6	× 115 / 753	−10
6	32,472	2472.7	− 2552	−79.3	× 111 / 753	−11.7
7	32,473	2465.7	− 2567	−101.3	× 150 / 753	−20.2
8	32,474	2492.2	− 2586	−93.8	× 174 / 753	−21.7
Sum, rounded to a whole point						−71

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −83, −82, −82, −90, −79, −106, −100, −91, −71 → −87.1
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 1 · 2016→2017: 0 · 2017→2018: 8 · 2018→2019: 11 · 2019→2022: 27 · 2022→2023: 6 · 2023→2024: 9 · 2024→2025: 20 → 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 −59.7, lower limit −114.5.

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. From 2014–15, 2015–16, 2016–17, 2017–18, 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25, 2025–26.