Bandini Street Elementary: 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.

Measured against the grade bars

The state's math test uses one scale for every grade, so a score means the same thing in grade 3 as in grade 5.

3rd The average 3rd grader meets the grade 3 bar. 2439 vs. 2436.
4th The average 4th grader meets the grade 4 bar. 2486 vs. 2485.
5th The average 5th grader meets the grade 5 bar. 2537 vs. 2528.

2026 results. "Meets standard" is the state's mark for being on track for that grade.

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	29,423	2385.7	− 2436	−50.3	× 50 / 190	−13.2
4	29,425	2446.0	− 2485	−39	× 56 / 190	−11.5
5	29,427	2448.6	− 2528	−79.4	× 49 / 190	−20.5
6	29,429	2441.6	− 2552	−110.4	× 35 / 190	−20.3
Sum, rounded to a whole point						−66

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	27,645	2391.5	− 2436	−44.5	× 65 / 202	−14.3
4	27,647	2465.3	− 2485	−19.7	× 46 / 202	−4.5
5	27,650	2448.3	− 2528	−79.7	× 57 / 202	−22.5
6	27,651	2480.1	− 2552	−71.9	× 34 / 202	−12.1
Sum, rounded to a whole point						−53

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	28,216	2395.3	− 2436	−40.7	× 38 / 177	−8.7
4	28,218	2451.1	− 2485	−33.9	× 65 / 177	−12.4
5	28,221	2444.5	− 2528	−83.5	× 45 / 177	−21.2
6	28,223	2461.4	− 2552	−90.6	× 29 / 177	−14.8
Sum, rounded to a whole point						−57

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	28,268	2390.3	− 2436	−45.7	× 37 / 172	−9.8
4	28,270	2487.4	− 2485	2.4	× 39 / 172	0.5
5	28,272	2445.4	− 2528	−82.6	× 66 / 172	−31.7
6	28,274	2467.0	− 2552	−85	× 30 / 172	−14.8
Sum, rounded to a whole point						−56

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	28,448	2428.3	− 2436	−7.7	× 47 / 150	−2.4
4	28,449	2461.5	− 2485	−23.5	× 31 / 150	−4.9
5	28,450	2471.3	− 2528	−56.7	× 43 / 150	−16.3
6	28,451	2468.9	− 2552	−83.1	× 29 / 150	−16.1
Sum, rounded to a whole point						−40

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	28,482	2373.4	− 2436	−62.6	× 39 / 102	−23.9
4	28,483	2470.6	− 2485	−14.4	× 34 / 102	−4.8
5	28,484	2416.6	− 2528	−111.4	× 29 / 102	−31.7
Sum, rounded to a whole point						−60

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	28,543	2378.0	− 2436	−58	× 24 / 106	−13.1
4	28,544	2428.3	− 2485	−56.7	× 48 / 106	−25.7
5	28,545	2501.9	− 2528	−26.1	× 34 / 106	−8.4
Sum, rounded to a whole point						−47

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	28,409	2399.5	− 2436	−36.5	× 33 / 108	−11.2
4	28,410	2443.9	− 2485	−41.1	× 29 / 108	−11
5	28,411	2494.0	− 2528	−34	× 46 / 108	−14.5
Sum, rounded to a whole point						−37

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	28,272	2439.1	− 2436	3.1	× 28 / 88	1
4	28,273	2499.6	− 2485	14.6	× 32 / 88	5.3
5	28,274	2522.5	− 2528	−5.5	× 28 / 88	−1.8
Sum, rounded to a whole point						5

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	28,266	2439.3	− 2436	3.3	× 32 / 90	1.2
4	28,267	2485.6	− 2485	0.6	× 27 / 90	0.2
5	28,268	2537.3	− 2528	9.3	× 31 / 90	3.2
Sum, rounded to a whole point						5

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −66, −53, −57, −56, −40, −60, −47, −37, 5, 5 → −40.6
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 13 · 2016→2017: 4 · 2017→2018: 1 · 2018→2019: 16 · 2019→2022: 20 · 2022→2023: 13 · 2023→2024: 10 · 2024→2025: 42 · 2025→2026: 0 → average 13.2
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 13.2 × 2.66 = 35.1. Upper limit −5.5, lower limit −75.7.

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.