Gerber Union Elementary: math

The shaded band is this district'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	99,393	2402.1	− 2436	−33.9	× 48 / 257	−6.3
4	99,396	2410.5	− 2485	−74.5	× 45 / 257	−13
5	99,398	2432.6	− 2528	−95.4	× 40 / 257	−14.8
6	99,399	2465.0	− 2552	−87	× 47 / 257	−15.9
7	99,401	2508.4	− 2567	−58.6	× 41 / 257	−9.3
8	99,404	2513.5	− 2586	−72.5	× 36 / 257	−10.2
Sum, rounded to a whole point						−70

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	92,174	2389.0	− 2436	−47	× 42 / 268	−7.4
4	92,177	2414.4	− 2485	−70.6	× 51 / 268	−13.4
5	92,179	2423.6	− 2528	−104.4	× 50 / 268	−19.5
6	92,180	2482.6	− 2552	−69.4	× 41 / 268	−10.6
7	92,183	2478.0	− 2567	−89	× 43 / 268	−14.3
8	92,184	2530.0	− 2586	−56	× 41 / 268	−8.6
Sum, rounded to a whole point						−74

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	94,964	2402.2	− 2436	−33.8	× 45 / 271	−5.6
4	94,967	2406.1	− 2485	−78.9	× 42 / 271	−12.2
5	94,969	2414.8	− 2528	−113.2	× 56 / 271	−23.4
6	94,971	2451.7	− 2552	−100.3	× 44 / 271	−16.3
7	94,973	2482.4	− 2567	−84.6	× 40 / 271	−12.5
8	94,975	2506.0	− 2586	−80	× 44 / 271	−13
Sum, rounded to a whole point						−83

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	95,148	2400.7	− 2436	−35.3	× 41 / 267	−5.4
4	95,151	2414.3	− 2485	−70.7	× 42 / 267	−11.1
5	95,152	2431.2	− 2528	−96.8	× 44 / 267	−16
6	95,155	2462.7	− 2552	−89.3	× 55 / 267	−18.4
7	95,156	2437.3	− 2567	−129.7	× 43 / 267	−20.9
8	95,159	2497.5	− 2586	−88.5	× 42 / 267	−13.9
Sum, rounded to a whole point						−86

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	95,808	2400.1	− 2436	−35.9	× 48 / 256	−6.7
4	95,809	2426.9	− 2485	−58.1	× 38 / 256	−8.6
5	95,810	2434.0	− 2528	−94	× 43 / 256	−15.8
6	95,811	2471.9	− 2552	−80.1	× 36 / 256	−11.3
7	95,812	2484.8	− 2567	−82.2	× 49 / 256	−15.7
8	95,813	2483.2	− 2586	−102.8	× 42 / 256	−16.9
Sum, rounded to a whole point						−75

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	95,968	2330.8	− 2436	−105.2	× 34 / 255	−14
4	95,969	2359.5	− 2485	−125.5	× 46 / 255	−22.6
5	95,970	2421.7	− 2528	−106.3	× 37 / 255	−15.4
6	95,971	2400.1	− 2552	−151.9	× 49 / 255	−29.2
7	95,972	2461.6	− 2567	−105.4	× 37 / 255	−15.3
8	95,973	2458.2	− 2586	−127.8	× 52 / 255	−26.1
Sum, rounded to a whole point						−123

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	95,837	2348.0	− 2436	−88	× 37 / 252	−12.9
4	95,838	2368.7	− 2485	−116.3	× 35 / 252	−16.2
5	95,839	2406.4	− 2528	−121.6	× 47 / 252	−22.7
6	95,840	2421.7	− 2552	−130.3	× 42 / 252	−21.7
7	95,841	2446.7	− 2567	−120.3	× 52 / 252	−24.8
8	95,842	2475.6	− 2586	−110.4	× 39 / 252	−17.1
Sum, rounded to a whole point						−115

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	95,713	2313.4	− 2436	−122.6	× 41 / 256	−19.6
4	95,714	2356.0	− 2485	−129	× 46 / 256	−23.2
5	95,715	2392.2	− 2528	−135.8	× 37 / 256	−19.6
6	95,716	2389.2	− 2552	−162.8	× 45 / 256	−28.6
7	95,717	2417.2	− 2567	−149.8	× 40 / 256	−23.4
8	95,718	2413.2	− 2586	−172.8	× 47 / 256	−31.7
Sum, rounded to a whole point						−146

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	95,447	2349.7	− 2436	−86.3	× 43 / 245	−15.1
4	95,448	2346.0	− 2485	−139	× 42 / 245	−23.8
5	95,449	2380.2	− 2528	−147.8	× 39 / 245	−23.5
6	95,450	2396.4	− 2552	−155.6	× 38 / 245	−24.1
7	95,451	2426.9	− 2567	−140.1	× 41 / 245	−23.4
8	95,452	2410.9	− 2586	−175.1	× 42 / 245	−30
Sum, rounded to a whole point						−140

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	95,051	2318.8	− 2436	−117.2	× 33 / 237	−16.3
4	95,052	2369.4	− 2485	−115.6	× 45 / 237	−21.9
5	95,053	2356.2	− 2528	−171.8	× 41 / 237	−29.7
6	95,054	2405.7	− 2552	−146.3	× 38 / 237	−23.5
7	95,055	2441.4	− 2567	−125.6	× 40 / 237	−21.2
8	95,056	2424.4	− 2586	−161.6	× 40 / 237	−27.3
Sum, rounded to a whole point						−140

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −70, −74, −83, −86, −75, −123, −115, −146, −140, −140 → −105.2
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 4 · 2016→2017: 9 · 2017→2018: 3 · 2018→2019: 11 · 2019→2022: 48 · 2022→2023: 8 · 2023→2024: 31 · 2024→2025: 6 · 2025→2026: 0 → average 13.3
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 13.3 × 2.66 = 35.4. Upper limit −69.8, lower limit −140.6.

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 — for a district, the total across its schools. From 2014–15, 2015–16, 2016–17, 2017–18, 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25, 2025–26.

Schools in Gerber Union Elementary

K–8 schools

Gerber Elementary