Robla Elementary: english

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	61,164	2361.6	− 2432	−70.4	× 316 / 1229	−18.1
4	61,167	2410.4	− 2473	−62.6	× 322 / 1229	−16.4
5	61,168	2455.0	− 2502	−47	× 290 / 1229	−11.1
6	61,171	2485.3	− 2531	−45.7	× 301 / 1229	−11.2
Sum, rounded to a whole point						−57

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	56,736	2381.8	− 2432	−50.2	× 300 / 1218	−12.4
4	56,737	2416.5	− 2473	−56.5	× 322 / 1218	−14.9
5	56,739	2455.5	− 2502	−46.5	× 317 / 1218	−12.1
6	56,741	2494.9	− 2531	−36.1	× 279 / 1218	−8.3
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	58,384	2384.0	− 2432	−48	× 282 / 1215	−11.1
4	58,387	2409.6	− 2473	−63.4	× 307 / 1215	−16
5	58,389	2438.6	− 2502	−63.4	× 323 / 1215	−16.9
6	58,391	2489.2	− 2531	−41.8	× 303 / 1215	−10.4
Sum, rounded to a whole point						−54

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	58,513	2397.3	− 2432	−34.7	× 288 / 1189	−8.4
4	58,515	2433.6	− 2473	−39.4	× 290 / 1189	−9.6
5	58,517	2449.8	− 2502	−52.2	× 296 / 1189	−13
6	58,519	2502.1	− 2531	−28.9	× 315 / 1189	−7.7
Sum, rounded to a whole point						−39

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	58,754	2397.6	− 2432	−34.4	× 283 / 1135	−8.6
4	58,755	2440.2	− 2473	−32.8	× 287 / 1135	−8.3
5	58,756	2473.5	− 2502	−28.5	× 287 / 1135	−7.2
6	58,757	2502.1	− 2531	−28.9	× 278 / 1135	−7.1
Sum, rounded to a whole point						−31

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	58,829	2361.2	− 2432	−70.8	× 280 / 1079	−18.4
4	58,830	2417.9	− 2473	−55.1	× 271 / 1079	−13.8
5	58,831	2455.9	− 2502	−46.1	× 273 / 1079	−11.7
6	58,832	2498.3	− 2531	−32.7	× 255 / 1079	−7.7
Sum, rounded to a whole point						−52

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	58,783	2364.0	− 2432	−68	× 246 / 1040	−16.1
4	58,784	2405.0	− 2473	−68	× 266 / 1040	−17.4
5	58,785	2452.7	− 2502	−49.3	× 270 / 1040	−12.8
6	58,786	2495.5	− 2531	−35.5	× 258 / 1040	−8.8
Sum, rounded to a whole point						−55

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	58,700	2361.9	− 2432	−70.1	× 285 / 1087	−18.4
4	58,701	2398.4	− 2473	−74.6	× 253 / 1087	−17.4
5	58,702	2440.8	− 2502	−61.2	× 271 / 1087	−15.3
6	58,703	2484.0	− 2531	−47	× 278 / 1087	−12
Sum, rounded to a whole point						−63

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	58,457	2360.2	− 2432	−71.8	× 263 / 1070	−17.6
4	58,458	2414.1	− 2473	−58.9	× 295 / 1070	−16.2
5	58,459	2438.1	− 2502	−63.9	× 250 / 1070	−14.9
6	58,460	2484.2	− 2531	−46.8	× 262 / 1070	−11.5
Sum, rounded to a whole point						−60

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	58,374	2369.7	− 2432	−62.3	× 257 / 1074	−14.9
4	58,375	2415.7	− 2473	−57.3	× 277 / 1074	−14.8
5	58,376	2448.6	− 2502	−53.4	× 293 / 1074	−14.6
6	58,377	2485.2	− 2531	−45.8	× 247 / 1074	−10.5
Sum, rounded to a whole point						−55

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −57, −48, −54, −39, −31, −52, −55, −63, −60, −55 → −51.4
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 9 · 2016→2017: 6 · 2017→2018: 15 · 2018→2019: 8 · 2019→2022: 21 · 2022→2023: 3 · 2023→2024: 8 · 2024→2025: 3 · 2025→2026: 5 → average 8.7
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 8.7 × 2.66 = 23.1. Upper limit −28.3, lower limit −74.5.

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 — 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.

Robla Elementary