Alpha: Blanca Alvarado Middle: 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
6	86,005	2492.6	− 2531	−38.4	× 160 / 446	−13.8
7	86,008	2504.9	− 2552	−47.1	× 147 / 446	−15.5
8	86,009	2552.4	− 2567	−14.6	× 139 / 446	−4.6
Sum, rounded to a whole point						−34

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	79,812	2502.5	− 2531	−28.5	× 146 / 408	−10.2
7	79,815	2538.2	− 2552	−13.8	× 131 / 408	−4.4
8	79,817	2562.8	− 2567	−4.2	× 131 / 408	−1.3
Sum, rounded to a whole point						−16

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	81,994	2475.5	− 2531	−55.5	× 121 / 370	−18.2
7	81,995	2526.6	− 2552	−25.4	× 127 / 370	−8.7
8	81,997	2560.6	− 2567	−6.4	× 122 / 370	−2.1
Sum, rounded to a whole point						−29

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
5	82,186	2492.7	− 2502	−9.3	× 56 / 338	−1.5
6	82,188	2489.6	− 2531	−41.4	× 68 / 338	−8.3
7	82,190	2510.4	− 2552	−41.6	× 106 / 338	−13
8	82,192	2558.1	− 2567	−8.9	× 108 / 338	−2.8
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
5	82,795	2464.7	− 2502	−37.3	× 49 / 291	−6.3
6	82,796	2503.7	− 2531	−27.3	× 73 / 291	−6.8
7	82,797	2536.7	− 2552	−15.3	× 65 / 291	−3.4
8	82,798	2541.9	− 2567	−25.1	× 104 / 291	−9
Sum, rounded to a whole point						−26

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
5	83,000	2458.9	− 2502	−43.1	× 50 / 222	−9.7
6	83,001	2500.4	− 2531	−30.6	× 58 / 222	−8
7	83,002	2507.7	− 2552	−44.3	× 57 / 222	−11.4
8	83,003	2523.9	− 2567	−43.1	× 57 / 222	−11.1
Sum, rounded to a whole point						−40

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	82,981	2325.1	− 2432	−106.9	× 53 / 283	−20
5	82,982	2447.0	− 2502	−55	× 57 / 283	−11.1
6	82,983	2492.4	− 2531	−38.6	× 57 / 283	−7.8
7	82,984	2529.0	− 2552	−23	× 59 / 283	−4.8
8	82,985	2500.6	− 2567	−66.4	× 57 / 283	−13.4
Sum, rounded to a whole point						−57

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	82,982	2358.8	− 2432	−73.2	× 46 / 305	−11
4	82,983	2380.5	− 2473	−92.5	× 51 / 305	−15.5
5	82,984	2390.2	− 2502	−111.8	× 35 / 305	−12.8
6	82,985	2479.3	− 2531	−51.7	× 58 / 305	−9.8
7	82,986	2494.5	− 2552	−57.5	× 57 / 305	−10.7
8	82,987	2528.7	− 2567	−38.3	× 58 / 305	−7.3
Sum, rounded to a whole point						−67

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	82,664	2341.6	− 2432	−90.4	× 58 / 344	−15.2
4	82,665	2419.2	− 2473	−53.8	× 55 / 344	−8.6
5	82,666	2404.4	− 2502	−97.6	× 57 / 344	−16.2
6	82,667	2421.7	− 2531	−109.3	× 51 / 344	−16.2
7	82,668	2472.7	− 2552	−79.3	× 63 / 344	−14.5
8	82,669	2495.5	− 2567	−71.5	× 60 / 344	−12.5
Sum, rounded to a whole point						−83

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −34, −16, −29, −26, −26, −40, −57, −67, −83 → −42
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 18 · 2016→2017: 13 · 2017→2018: 3 · 2018→2019: 0 · 2019→2022: 14 · 2022→2023: 17 · 2023→2024: 10 · 2024→2025: 16 → average 11.4
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 11.4 × 2.66 = 30.3. Upper limit −11.7, lower limit −72.3.

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