Occs:Chep/Pchs: 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.

2015 from sb_ca2015_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	47,750	2408.8	− 2432	−23.2	× 44 / 408	−2.5
4	47,753	2470.1	− 2473	−2.9	× 44 / 408	−0.3
5	47,754	2519.1	− 2502	17.1	× 47 / 408	2
6	47,757	2552.0	− 2531	21	× 67 / 408	3.4
7	47,758	2595.5	− 2552	43.5	× 76 / 408	8.1
8	47,761	2600.2	− 2567	33.2	× 54 / 408	4.4
11	47,762	2641.2	− 2583	58.2	× 76 / 408	10.8
Sum, rounded to a whole point						26

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	44,408	2452.2	− 2432	20.2	× 40 / 242	3.3
4	44,410	2471.2	− 2473	−1.8	× 35 / 242	−0.3
5	44,412	2548.3	− 2502	46.3	× 33 / 242	6.3
6	44,414	2550.6	− 2531	19.6	× 43 / 242	3.5
7	44,416	2610.3	− 2552	58.3	× 37 / 242	8.9
8	44,417	2621.2	− 2567	54.2	× 54 / 242	12.1
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	45,568	2422.2	− 2432	−9.8	× 34 / 322	−1
4	45,570	2498.4	− 2473	25.4	× 38 / 322	3
5	45,573	2521.5	− 2502	19.5	× 29 / 322	1.8
6	45,575	2567.1	− 2531	36.1	× 31 / 322	3.5
7	45,577	2579.2	− 2552	27.2	× 42 / 322	3.5
8	45,578	2623.9	− 2567	56.9	× 38 / 322	6.7
11	45,580	2629.6	− 2583	46.6	× 110 / 322	15.9
Sum, rounded to a whole point						33

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	45,588	2441.6	− 2432	9.6	× 28 / 294	0.9
4	45,590	2434.5	− 2473	−38.5	× 31 / 294	−4.1
5	45,592	2530.7	− 2502	28.7	× 40 / 294	3.9
6	45,594	2553.8	− 2531	22.8	× 27 / 294	2.1
7	45,596	2612.1	− 2552	60.1	× 27 / 294	5.5
8	45,598	2615.4	− 2567	48.4	× 36 / 294	5.9
11	45,600	2611.0	− 2583	28	× 105 / 294	10
Sum, rounded to a whole point						24

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	45,762	2397.8	− 2432	−34.2	× 17 / 219	−2.7
4	45,763	2495.9	− 2473	22.9	× 27 / 219	2.8
5	45,764	2545.8	− 2502	43.8	× 18 / 219	3.6
6	45,765	2565.7	− 2531	34.7	× 24 / 219	3.8
7	45,766	2633.2	− 2552	81.2	× 31 / 219	11.5
8	45,767	2625.0	− 2567	58	× 24 / 219	6.4
11	45,768	2637.9	− 2583	54.9	× 78 / 219	19.6
Sum, rounded to a whole point						45

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
11	44,415	2670.2	− 2583	87.2	× 29 / 29	87.2
Sum, rounded to a whole point						87

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	45,492	2409.6	− 2432	−22.4	× 28 / 169	−3.7
4	45,493	2482.3	− 2473	9.3	× 21 / 169	1.2
5	45,494	2487.8	− 2502	−14.2	× 25 / 169	−2.1
6	45,495	2532.8	− 2531	1.8	× 19 / 169	0.2
7	45,496	2536.3	− 2552	−15.7	× 14 / 169	−1.3
8	45,497	2608.7	− 2567	41.7	× 14 / 169	3.5
11	45,498	2659.5	− 2583	76.5	× 48 / 169	21.7
Sum, rounded to a whole point						19

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	45,470	2392.3	− 2432	−39.7	× 15 / 68	−8.8
4	45,471	2427.0	− 2473	−46	× 14 / 68	−9.5
6	45,473	2479.5	− 2531	−51.5	× 13 / 68	−9.8
11	45,476	2602.9	− 2583	19.9	× 26 / 68	7.6
Sum, rounded to a whole point						−20

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
4	45,332	2476.1	− 2473	3.1	× 13 / 94	0.4
5	45,333	2476.4	− 2502	−25.6	× 14 / 94	−3.8
6	45,334	2521.9	− 2531	−9.1	× 16 / 94	−1.5
7	45,335	2573.9	− 2552	21.9	× 13 / 94	3
8	45,336	2614.9	− 2567	47.9	× 13 / 94	6.6
11	45,337	2632.9	− 2583	49.9	× 25 / 94	13.3
Sum, rounded to a whole point						18

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	45,097	2416.3	− 2432	−15.7	× 12 / 82	−2.3
6	45,100	2502.8	− 2531	−28.2	× 13 / 82	−4.5
7	45,101	2603.9	− 2552	51.9	× 11 / 82	7
8	45,102	2538.9	− 2567	−28.1	× 20 / 82	−6.9
11	45,103	2655.6	− 2583	72.6	× 26 / 82	23
Sum, rounded to a whole point						16

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. 26, 34, 33, 24, 45, 87, 19, −20, 18, 16 → 28.2
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 8 · 2016→2017: 1 · 2017→2018: 9 · 2018→2019: 21 · 2019→2021: 42 · 2021→2022: 68 · 2022→2023: 39 · 2023→2024: 38 · 2024→2025: 2 → average 25.3
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 25.3 × 2.66 = 67.3. Upper limit 95.5, lower limit −39.1.

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.