Cucamonga 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	65,542	2377.9	− 2436	−58.1	× 279 / 1600	−10.1
4	65,544	2424.5	− 2485	−60.5	× 273 / 1600	−10.3
5	65,546	2447.5	− 2528	−80.5	× 272 / 1600	−13.7
6	65,548	2454.3	− 2552	−97.7	× 243 / 1600	−14.8
7	65,550	2493.4	− 2567	−73.6	× 266 / 1600	−12.2
8	65,552	2497.7	− 2586	−88.3	× 267 / 1600	−14.7
Sum, rounded to a whole point						−76

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	60,775	2386.6	− 2436	−49.4	× 290 / 1633	−8.8
4	60,778	2417.2	− 2485	−67.8	× 287 / 1633	−11.9
5	60,780	2445.4	− 2528	−82.6	× 287 / 1633	−14.5
6	60,782	2473.4	− 2552	−78.6	× 262 / 1633	−12.6
7	60,784	2515.6	− 2567	−51.4	× 243 / 1633	−7.6
8	60,786	2536.1	− 2586	−49.9	× 264 / 1633	−8.1
Sum, rounded to a whole point						−64

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	62,524	2398.1	− 2436	−37.9	× 287 / 1585	−6.9
4	62,526	2423.3	− 2485	−61.7	× 284 / 1585	−11.1
5	62,527	2442.6	− 2528	−85.4	× 284 / 1585	−15.3
6	62,530	2473.8	− 2552	−78.2	× 235 / 1585	−11.6
7	62,532	2508.9	− 2567	−58.1	× 259 / 1585	−9.5
8	62,533	2534.9	− 2586	−51.1	× 236 / 1585	−7.6
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	62,601	2412.5	− 2436	−23.5	× 251 / 1553	−3.8
4	62,604	2439.0	− 2485	−46	× 283 / 1553	−8.4
5	62,605	2457.4	− 2528	−70.6	× 279 / 1553	−12.7
6	62,608	2467.2	− 2552	−84.8	× 268 / 1553	−14.6
7	62,609	2509.8	− 2567	−57.2	× 227 / 1553	−8.4
8	62,612	2517.6	− 2586	−68.4	× 245 / 1553	−10.8
Sum, rounded to a whole point						−59

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	62,881	2403.4	− 2436	−32.6	× 242 / 1495	−5.3
4	62,882	2441.8	− 2485	−43.2	× 243 / 1495	−7
5	62,883	2467.6	− 2528	−60.4	× 271 / 1495	−10.9
6	62,884	2454.8	− 2552	−97.2	× 256 / 1495	−16.6
7	62,885	2504.2	− 2567	−62.8	× 270 / 1495	−11.3
8	62,886	2543.4	− 2586	−42.6	× 213 / 1495	−6.1
Sum, rounded to a whole point						−57

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	62,940	2385.1	− 2436	−50.9	× 260 / 1540	−8.6
4	62,941	2406.2	− 2485	−78.8	× 273 / 1540	−14
5	62,942	2439.1	− 2528	−88.9	× 277 / 1540	−16
6	62,943	2462.8	− 2552	−89.2	× 223 / 1540	−12.9
7	62,944	2474.6	− 2567	−92.4	× 248 / 1540	−14.9
8	62,945	2474.0	− 2586	−112	× 259 / 1540	−18.8
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	62,892	2386.2	− 2436	−49.8	× 251 / 1477	−8.5
4	62,893	2416.2	− 2485	−68.8	× 252 / 1477	−11.7
5	62,894	2432.4	− 2528	−95.6	× 275 / 1477	−17.8
6	62,895	2452.4	− 2552	−99.6	× 241 / 1477	−16.3
7	62,896	2471.6	− 2567	−95.4	× 224 / 1477	−14.5
8	62,897	2473.0	− 2586	−113	× 234 / 1477	−17.9
Sum, rounded to a whole point						−87

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	62,847	2364.3	− 2436	−71.7	× 272 / 1524	−12.8
4	62,848	2420.5	− 2485	−64.5	× 261 / 1524	−11
5	62,849	2437.7	− 2528	−90.3	× 266 / 1524	−15.8
6	62,850	2447.7	− 2552	−104.3	× 265 / 1524	−18.1
7	62,851	2473.5	− 2567	−93.5	× 241 / 1524	−14.8
8	62,852	2480.5	− 2586	−105.5	× 219 / 1524	−15.2
Sum, rounded to a whole point						−88

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	62,616	2374.7	− 2436	−61.3	× 226 / 1521	−9.1
4	62,617	2411.4	− 2485	−73.6	× 270 / 1521	−13.1
5	62,618	2451.5	− 2528	−76.5	× 271 / 1521	−13.6
6	62,619	2465.0	− 2552	−87	× 251 / 1521	−14.4
7	62,620	2482.7	− 2567	−84.3	× 263 / 1521	−14.6
8	62,621	2493.4	− 2586	−92.6	× 240 / 1521	−14.6
Sum, rounded to a whole point						−79

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	62,589	2394.5	− 2436	−41.5	× 239 / 1435	−6.9
4	62,590	2440.2	− 2485	−44.8	× 222 / 1435	−6.9
5	62,591	2443.3	− 2528	−84.7	× 260 / 1435	−15.3
6	62,592	2486.4	− 2552	−65.6	× 233 / 1435	−10.7
7	62,593	2491.2	− 2567	−75.8	× 231 / 1435	−12.2
8	62,594	2496.6	− 2586	−89.4	× 250 / 1435	−15.6
Sum, rounded to a whole point						−68

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −76, −64, −62, −59, −57, −85, −87, −88, −79, −68 → −72.5
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 12 · 2016→2017: 2 · 2017→2018: 3 · 2018→2019: 2 · 2019→2022: 28 · 2022→2023: 2 · 2023→2024: 1 · 2024→2025: 9 · 2025→2026: 11 → average 7.8
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 7.8 × 2.66 = 20.7. Upper limit −51.8, lower limit −93.2.

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 Cucamonga Elementary

Elementary schools

Middle schools

Rancho Cucamonga Middle