Gerber Elementary: 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	99,407	2384.9	− 2432	−47.1	× 48 / 248	−9.1
4	99,410	2419.0	− 2473	−54	× 45 / 248	−9.8
5	99,411	2459.1	− 2502	−42.9	× 37 / 248	−6.4
6	99,414	2479.4	− 2531	−51.6	× 46 / 248	−9.6
7	99,415	2510.2	− 2552	−41.8	× 38 / 248	−6.4
8	99,418	2519.5	− 2567	−47.5	× 34 / 248	−6.5
Sum, rounded to a whole point						−48

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	92,188	2371.9	− 2432	−60.1	× 42 / 270	−9.3
4	92,190	2432.2	− 2473	−40.8	× 53 / 270	−8
5	92,192	2448.7	− 2502	−53.3	× 51 / 270	−10.1
6	92,195	2481.2	− 2531	−49.8	× 41 / 270	−7.6
7	92,196	2498.8	− 2552	−53.2	× 43 / 270	−8.5
8	92,199	2537.0	− 2567	−30	× 40 / 270	−4.4
Sum, rounded to a whole point						−48

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	94,978	2382.1	− 2432	−49.9	× 45 / 270	−8.3
4	94,980	2399.0	− 2473	−74	× 42 / 270	−11.5
5	94,982	2403.3	− 2502	−98.7	× 56 / 270	−20.5
6	94,984	2470.5	− 2531	−60.5	× 44 / 270	−9.9
7	94,987	2495.5	− 2552	−56.5	× 40 / 270	−8.4
8	94,989	2545.5	− 2567	−21.5	× 43 / 270	−3.4
Sum, rounded to a whole point						−62

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	95,162	2375.7	− 2432	−56.3	× 41 / 267	−8.6
4	95,165	2412.1	− 2473	−60.9	× 42 / 267	−9.6
5	95,166	2436.4	− 2502	−65.6	× 44 / 267	−10.8
6	95,169	2471.2	− 2531	−59.8	× 55 / 267	−12.3
7	95,170	2471.6	− 2552	−80.4	× 43 / 267	−12.9
8	95,173	2532.3	− 2567	−34.7	× 42 / 267	−5.5
Sum, rounded to a whole point						−60

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	95,819	2369.6	− 2432	−62.4	× 48 / 255	−11.7
4	95,820	2422.5	− 2473	−50.5	× 38 / 255	−7.5
5	95,821	2425.3	− 2502	−76.7	× 43 / 255	−12.9
6	95,822	2503.9	− 2531	−27.1	× 36 / 255	−3.8
7	95,823	2510.5	− 2552	−41.5	× 48 / 255	−7.8
8	95,824	2524.0	− 2567	−43	× 42 / 255	−7.1
Sum, rounded to a whole point						−51

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	95,975	2303.9	− 2432	−128.1	× 34 / 245	−17.8
4	95,976	2363.7	− 2473	−109.3	× 44 / 245	−19.6
5	95,977	2423.6	− 2502	−78.4	× 36 / 245	−11.5
6	95,978	2438.4	− 2531	−92.6	× 46 / 245	−17.4
7	95,979	2513.1	− 2552	−38.9	× 37 / 245	−5.9
8	95,980	2502.5	− 2567	−64.5	× 48 / 245	−12.6
Sum, rounded to a whole point						−85

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	95,844	2357.9	− 2432	−74.1	× 36 / 247	−10.8
4	95,845	2360.5	− 2473	−112.5	× 35 / 247	−15.9
5	95,846	2419.0	− 2502	−83	× 46 / 247	−15.5
6	95,847	2453.8	− 2531	−77.2	× 41 / 247	−12.8
7	95,848	2468.3	− 2552	−83.7	× 51 / 247	−17.3
8	95,849	2526.5	− 2567	−40.5	× 38 / 247	−6.2
Sum, rounded to a whole point						−79

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	95,720	2314.0	− 2432	−118	× 37 / 247	−17.7
4	95,721	2369.4	− 2473	−103.6	× 44 / 247	−18.5
5	95,722	2395.0	− 2502	−107	× 36 / 247	−15.6
6	95,723	2427.0	− 2531	−104	× 45 / 247	−18.9
7	95,724	2467.9	− 2552	−84.1	× 38 / 247	−12.9
8	95,725	2476.1	− 2567	−90.9	× 47 / 247	−17.3
Sum, rounded to a whole point						−101

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	95,454	2338.9	− 2432	−93.1	× 43 / 244	−16.4
4	95,455	2331.4	− 2473	−141.6	× 42 / 244	−24.4
5	95,456	2405.1	− 2502	−96.9	× 39 / 244	−15.5
6	95,457	2416.9	− 2531	−114.1	× 37 / 244	−17.3
7	95,458	2474.7	− 2552	−77.3	× 41 / 244	−13
8	95,459	2431.1	− 2567	−135.9	× 42 / 244	−23.4
Sum, rounded to a whole point						−110

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −48, −48, −62, −60, −51, −85, −79, −101, −110 → −71.6
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 0 · 2016→2017: 14 · 2017→2018: 2 · 2018→2019: 9 · 2019→2022: 34 · 2022→2023: 6 · 2023→2024: 22 · 2024→2025: 9 → average 12
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 12 × 2.66 = 31.9. Upper limit −39.7, lower limit −103.5.

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.