Imperial Unified: 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	15,102	2410.3	− 2432	−21.7	× 279 / 2022	−3
4	15,105	2445.2	− 2473	−27.8	× 304 / 2022	−4.2
5	15,106	2476.3	− 2502	−25.7	× 282 / 2022	−3.6
6	15,109	2511.5	− 2531	−19.5	× 317 / 2022	−3.1
7	15,110	2558.4	− 2552	6.4	× 303 / 2022	1
8	15,113	2562.0	− 2567	−5	× 298 / 2022	−0.7
11	15,114	2630.7	− 2583	47.7	× 239 / 2022	5.6
Sum, rounded to a whole point						−8

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	14,130	2428.9	− 2432	−3.1	× 281 / 2100	−0.4
4	14,133	2459.4	− 2473	−13.6	× 285 / 2100	−1.8
5	14,135	2497.1	− 2502	−4.9	× 305 / 2100	−0.7
6	14,137	2526.3	− 2531	−4.7	× 289 / 2100	−0.6
7	14,139	2552.6	− 2552	0.6	× 345 / 2100	0.1
8	14,140	2587.8	− 2567	20.8	× 311 / 2100	3.1
11	14,142	2630.2	− 2583	47.2	× 284 / 2100	6.4
Sum, rounded to a whole point						6

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	14,466	2427.5	− 2432	−4.5	× 325 / 2156	−0.7
4	14,467	2468.7	− 2473	−4.3	× 276 / 2156	−0.6
5	14,469	2489.0	− 2502	−13	× 300 / 2156	−1.8
6	14,471	2526.9	− 2531	−4.1	× 325 / 2156	−0.6
7	14,474	2577.6	− 2552	25.6	× 300 / 2156	3.6
8	14,475	2577.0	− 2567	10	× 344 / 2156	1.6
11	14,478	2615.0	− 2583	32	× 286 / 2156	4.2
Sum, rounded to a whole point						6

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	14,473	2437.3	− 2432	5.3	× 292 / 2143	0.7
4	14,476	2483.7	− 2473	10.7	× 319 / 2143	1.6
5	14,477	2502.6	− 2502	0.6	× 312 / 2143	0.1
6	14,480	2538.4	− 2531	7.4	× 307 / 2143	1.1
7	14,481	2573.6	− 2552	21.6	× 356 / 2143	3.6
8	14,484	2586.5	− 2567	19.5	× 300 / 2143	2.7
11	14,485	2620.8	− 2583	37.8	× 257 / 2143	4.5
Sum, rounded to a whole point						14

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	14,562	2438.2	− 2432	6.2	× 301 / 2243	0.8
4	14,563	2477.9	− 2473	4.9	× 296 / 2243	0.6
5	14,564	2512.6	− 2502	10.6	× 343 / 2243	1.6
6	14,565	2533.1	− 2531	2.1	× 319 / 2243	0.3
7	14,566	2571.0	− 2552	19	× 329 / 2243	2.8
8	14,567	2585.2	− 2567	18.2	× 375 / 2243	3
11	14,568	2645.8	− 2583	62.8	× 280 / 2243	7.8
Sum, rounded to a whole point						17

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	14,234	2394.4	− 2432	−37.6	× 270 / 1924	−5.3
4	14,235	2440.5	− 2473	−32.5	× 303 / 1924	−5.1
5	14,236	2485.9	− 2502	−16.1	× 306 / 1924	−2.6
6	14,237	2504.2	− 2531	−26.8	× 265 / 1924	−3.7
7	14,238	2542.7	− 2552	−9.3	× 290 / 1924	−1.4
8	14,239	2560.9	− 2567	−6.1	× 290 / 1924	−0.9
11	14,240	2611.1	− 2583	28.1	× 200 / 1924	2.9
Sum, rounded to a whole point						−16

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	14,571	2424.5	− 2432	−7.5	× 310 / 2262	−1
4	14,572	2465.5	− 2473	−7.5	× 302 / 2262	−1
5	14,573	2482.9	− 2502	−19.1	× 326 / 2262	−2.8
6	14,574	2524.9	− 2531	−6.1	× 322 / 2262	−0.9
7	14,575	2566.2	− 2552	14.2	× 330 / 2262	2.1
8	14,576	2583.5	− 2567	16.5	× 361 / 2262	2.6
11	14,577	2609.7	− 2583	26.7	× 311 / 2262	3.7
Sum, rounded to a whole point						3

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	14,530	2422.2	− 2432	−9.8	× 337 / 2332	−1.4
4	14,531	2459.7	− 2473	−13.3	× 316 / 2332	−1.8
5	14,532	2484.5	− 2502	−17.5	× 325 / 2332	−2.4
6	14,533	2510.9	− 2531	−20.1	× 334 / 2332	−2.9
7	14,534	2568.4	− 2552	16.4	× 347 / 2332	2.4
8	14,535	2567.6	− 2567	0.6	× 348 / 2332	0.1
11	14,536	2607.3	− 2583	24.3	× 325 / 2332	3.4
Sum, rounded to a whole point						−3

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	14,487	2422.4	− 2432	−9.6	× 330 / 2398	−1.3
4	14,488	2471.1	− 2473	−1.9	× 348 / 2398	−0.3
5	14,489	2494.6	− 2502	−7.4	× 336 / 2398	−1
6	14,490	2503.2	− 2531	−27.8	× 350 / 2398	−4.1
7	14,491	2546.0	− 2552	−6	× 340 / 2398	−0.9
8	14,492	2579.5	− 2567	12.5	× 352 / 2398	1.8
11	14,493	2600.1	− 2583	17.1	× 342 / 2398	2.4
Sum, rounded to a whole point						−3

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	14,447	2422.6	− 2432	−9.4	× 369 / 2486	−1.4
4	14,448	2466.5	− 2473	−6.5	× 329 / 2486	−0.9
5	14,449	2510.4	− 2502	8.4	× 359 / 2486	1.2
6	14,450	2530.0	− 2531	−1	× 357 / 2486	−0.1
7	14,451	2567.4	− 2552	15.4	× 381 / 2486	2.4
8	14,452	2549.5	− 2567	−17.5	× 347 / 2486	−2.4
11	14,453	2590.9	− 2583	7.9	× 344 / 2486	1.1
Sum, rounded to a whole point						0

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	14,469	2413.4	− 2432	−18.6	× 359 / 2547	−2.6
4	14,470	2473.0	− 2473	0	× 366 / 2547	0
5	14,471	2508.0	− 2502	6	× 342 / 2547	0.8
6	14,472	2525.5	− 2531	−5.5	× 366 / 2547	−0.8
7	14,473	2557.5	− 2552	5.5	× 373 / 2547	0.8
8	14,474	2560.3	− 2567	−6.7	× 380 / 2547	−1
11	14,475	2606.3	− 2583	23.3	× 361 / 2547	3.3
Sum, rounded to a whole point						1

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −8, 6, 6, 14, 17, −16, 3, −3, −3, 0, 1 → 1.5
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 14 · 2016→2017: 0 · 2017→2018: 8 · 2018→2019: 3 · 2019→2021: 33 · 2021→2022: 19 · 2022→2023: 6 · 2023→2024: 0 · 2024→2025: 3 · 2025→2026: 1 → 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 24.6, lower limit −21.6.

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.

Imperial Unified