Brea-Olinda Unified: 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	48,204	2437.0	− 2432	5	× 441 / 3096	0.7
4	48,207	2495.2	− 2473	22.2	× 421 / 3096	3
5	48,208	2539.4	− 2502	37.4	× 446 / 3096	5.4
6	48,211	2559.4	− 2531	28.4	× 438 / 3096	4
7	48,212	2579.9	− 2552	27.9	× 410 / 3096	3.7
8	48,215	2597.3	− 2567	30.3	× 469 / 3096	4.6
11	48,216	2645.1	− 2583	62.1	× 471 / 3096	9.4
Sum, rounded to a whole point						31

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	44,830	2449.7	− 2432	17.7	× 404 / 2989	2.4
4	44,831	2495.6	− 2473	22.6	× 445 / 2989	3.4
5	44,833	2546.0	− 2502	44	× 414 / 2989	6.1
6	44,836	2574.9	− 2531	43.9	× 438 / 2989	6.4
7	44,837	2588.3	− 2552	36.3	× 443 / 2989	5.4
8	44,839	2581.9	− 2567	14.9	× 399 / 2989	2
11	44,841	2641.6	− 2583	58.6	× 446 / 2989	8.7
Sum, rounded to a whole point						34

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	46,009	2454.5	− 2432	22.5	× 431 / 3067	3.2
4	46,011	2499.8	− 2473	26.8	× 428 / 3067	3.7
5	46,012	2533.7	− 2502	31.7	× 447 / 3067	4.6
6	46,015	2577.5	− 2531	46.5	× 426 / 3067	6.5
7	46,017	2586.6	− 2552	34.6	× 439 / 3067	5
8	46,018	2590.9	− 2567	23.9	× 437 / 3067	3.4
11	46,021	2621.8	− 2583	38.8	× 459 / 3067	5.8
Sum, rounded to a whole point						32

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	46,020	2470.0	− 2432	38	× 402 / 3096	4.9
4	46,022	2509.9	− 2473	36.9	× 437 / 3096	5.2
5	46,024	2538.6	− 2502	36.6	× 445 / 3096	5.3
6	46,026	2573.7	− 2531	42.7	× 449 / 3096	6.2
7	46,028	2601.0	− 2552	49	× 436 / 3096	6.9
8	46,030	2589.6	− 2567	22.6	× 460 / 3096	3.4
11	46,032	2607.1	− 2583	24.1	× 467 / 3096	3.6
Sum, rounded to a whole point						35

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	46,200	2464.5	− 2432	32.5	× 430 / 3045	4.6
4	46,201	2511.7	− 2473	38.7	× 406 / 3045	5.2
5	46,202	2551.4	− 2502	49.4	× 443 / 3045	7.2
6	46,203	2567.6	− 2531	36.6	× 456 / 3045	5.5
7	46,204	2590.2	− 2552	38.2	× 456 / 3045	5.7
8	46,205	2591.1	− 2567	24.1	× 444 / 3045	3.5
11	46,206	2602.8	− 2583	19.8	× 410 / 3045	2.7
Sum, rounded to a whole point						34

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	44,863	2588.9	− 2552	36.9	× 420 / 1268	12.2
8	44,864	2591.0	− 2567	24	× 448 / 1268	8.5
11	44,865	2626.9	− 2583	43.9	× 400 / 1268	13.8
Sum, rounded to a whole point						35

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	46,020	2448.8	− 2432	16.8	× 441 / 3045	2.4
4	46,021	2504.3	− 2473	31.3	× 446 / 3045	4.6
5	46,022	2547.4	− 2502	45.4	× 430 / 3045	6.4
6	46,023	2575.5	− 2531	44.5	× 459 / 3045	6.7
7	46,024	2586.4	− 2552	34.4	× 436 / 3045	4.9
8	46,025	2573.5	− 2567	6.5	× 419 / 3045	0.9
11	46,026	2610.9	− 2583	27.9	× 414 / 3045	3.8
Sum, rounded to a whole point						30

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	46,010	2452.4	− 2432	20.4	× 461 / 3062	3.1
4	46,011	2492.4	− 2473	19.4	× 438 / 3062	2.8
5	46,012	2542.2	− 2502	40.2	× 440 / 3062	5.8
6	46,013	2571.7	− 2531	40.7	× 425 / 3062	5.6
7	46,014	2586.9	− 2552	34.9	× 450 / 3062	5.1
8	46,015	2578.3	− 2567	11.3	× 422 / 3062	1.6
11	46,016	2607.4	− 2583	24.4	× 426 / 3062	3.4
Sum, rounded to a whole point						27

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	45,863	2445.4	− 2432	13.4	× 440 / 3100	1.9
4	45,864	2502.8	− 2473	29.8	× 462 / 3100	4.4
5	45,865	2529.4	− 2502	27.4	× 442 / 3100	3.9
6	45,866	2581.0	− 2531	50	× 451 / 3100	7.3
7	45,867	2581.5	− 2552	29.5	× 440 / 3100	4.2
8	45,868	2593.3	− 2567	26.3	× 441 / 3100	3.7
11	45,869	2609.5	− 2583	26.5	× 424 / 3100	3.6
Sum, rounded to a whole point						29

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	45,615	2453.0	− 2432	21	× 426 / 3038	2.9
4	45,616	2506.0	− 2473	33	× 433 / 3038	4.7
5	45,617	2542.5	− 2502	40.5	× 473 / 3038	6.3
6	45,618	2573.5	− 2531	42.5	× 440 / 3038	6.2
7	45,619	2592.8	− 2552	40.8	× 458 / 3038	6.2
8	45,620	2604.8	− 2567	37.8	× 427 / 3038	5.3
11	45,621	2622.1	− 2583	39.1	× 381 / 3038	4.9
Sum, rounded to a whole point						36

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. 31, 34, 32, 35, 34, 35, 30, 27, 29, 36 → 32.3
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 3 · 2016→2017: 2 · 2017→2018: 3 · 2018→2019: 1 · 2019→2021: 1 · 2021→2022: 5 · 2022→2023: 3 · 2023→2024: 2 · 2024→2025: 7 → average 3
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 3 × 2.66 = 8. Upper limit 40.3, lower limit 24.3.

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.