Father Keith B. Kenny: 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	61,985	2398.5	− 2432	−33.5	× 71 / 240	−9.9
4	61,986	2424.1	− 2473	−48.9	× 48 / 240	−9.8
5	61,989	2461.0	− 2502	−41	× 54 / 240	−9.2
6	61,990	2499.1	− 2531	−31.9	× 38 / 240	−5.1
7	61,993	2509.8	− 2552	−42.2	× 29 / 240	−5.1
Sum, rounded to a whole point						−39

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	57,545	2381.1	− 2432	−50.9	× 46 / 241	−9.7
4	57,547	2460.7	− 2473	−12.3	× 63 / 241	−3.2
5	57,549	2481.8	− 2502	−20.2	× 43 / 241	−3.6
6	57,552	2503.3	− 2531	−27.7	× 47 / 241	−5.4
7	57,554	2523.7	− 2552	−28.3	× 21 / 241	−2.5
8	57,556	2557.6	− 2567	−9.4	× 21 / 241	−0.8
Sum, rounded to a whole point						−25

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	59,222	2373.5	− 2432	−58.5	× 44 / 206	−12.5
4	59,224	2420.0	− 2473	−53	× 45 / 206	−11.6
5	59,226	2476.1	− 2502	−25.9	× 55 / 206	−6.9
6	59,229	2535.5	− 2531	4.5	× 29 / 206	0.6
7	59,231	2583.7	− 2552	31.7	× 19 / 206	2.9
8	59,232	2560.4	− 2567	−6.6	× 14 / 206	−0.4
Sum, rounded to a whole point						−28

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	59,338	2400.2	− 2432	−31.8	× 64 / 224	−9.1
4	59,339	2426.1	− 2473	−46.9	× 42 / 224	−8.8
5	59,342	2468.1	− 2502	−33.9	× 39 / 224	−5.9
6	59,344	2500.4	− 2531	−30.6	× 47 / 224	−6.4
7	59,346	2563.0	− 2552	11	× 20 / 224	1
8	59,347	2628.3	− 2567	61.3	× 12 / 224	3.3
Sum, rounded to a whole point						−26

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	59,588	2402.4	− 2432	−29.6	× 48 / 165	−8.6
4	59,589	2444.8	− 2473	−28.2	× 52 / 165	−8.9
5	59,590	2487.2	− 2502	−14.8	× 34 / 165	−3
6	59,591	2510.3	− 2531	−20.7	× 31 / 165	−3.9
Sum, rounded to a whole point						−24

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	59,671	2353.4	− 2432	−78.6	× 45 / 152	−23.3
4	59,672	2419.3	− 2473	−53.7	× 28 / 152	−9.9
5	59,673	2472.8	− 2502	−29.2	× 50 / 152	−9.6
6	59,674	2444.1	− 2531	−86.9	× 29 / 152	−16.6
Sum, rounded to a whole point						−59

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	59,629	2329.4	− 2432	−102.6	× 29 / 158	−18.8
4	59,630	2389.3	− 2473	−83.7	× 47 / 158	−24.9
5	59,631	2465.6	− 2502	−36.4	× 31 / 158	−7.1
6	59,632	2476.6	− 2531	−54.4	× 51 / 158	−17.6
Sum, rounded to a whole point						−68

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	59,556	2322.7	− 2432	−109.3	× 23 / 132	−19
4	59,557	2378.9	− 2473	−94.1	× 29 / 132	−20.7
5	59,558	2402.2	− 2502	−99.8	× 48 / 132	−36.3
6	59,559	2464.6	− 2531	−66.4	× 32 / 132	−16.1
Sum, rounded to a whole point						−92

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	59,313	2342.1	− 2432	−89.9	× 38 / 141	−24.2
4	59,314	2389.8	− 2473	−83.2	× 29 / 141	−17.1
5	59,315	2425.8	− 2502	−76.2	× 29 / 141	−15.7
6	59,316	2490.0	− 2531	−41	× 45 / 141	−13.1
Sum, rounded to a whole point						−70

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −39, −25, −28, −26, −24, −59, −68, −92, −70 → −47.9
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 14 · 2016→2017: 3 · 2017→2018: 2 · 2018→2019: 2 · 2019→2022: 35 · 2022→2023: 9 · 2023→2024: 24 · 2024→2025: 22 → average 13.9
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 13.9 × 2.66 = 37. Upper limit −10.9, lower limit −84.9.

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