Martinez 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	6,561	2421.0	− 2432	−11	× 324 / 2166	−1.6
4	6,562	2470.2	− 2473	−2.8	× 301 / 2166	−0.4
5	6,565	2519.8	− 2502	17.8	× 339 / 2166	2.8
6	6,566	2531.0	− 2531	0	× 331 / 2166	0
7	6,569	2560.0	− 2552	8	× 316 / 2166	1.2
8	6,570	2563.8	− 2567	−3.2	× 305 / 2166	−0.5
11	6,573	2602.7	− 2583	19.7	× 250 / 2166	2.3
Sum, rounded to a whole point						4

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	5,922	2425.6	− 2432	−6.4	× 304 / 2200	−0.9
4	5,924	2473.7	− 2473	0.7	× 305 / 2200	0.1
5	5,926	2516.5	− 2502	14.5	× 302 / 2200	2
6	5,929	2521.9	− 2531	−9.1	× 345 / 2200	−1.4
7	5,931	2538.9	− 2552	−13.1	× 326 / 2200	−1.9
8	5,933	2552.7	− 2567	−14.3	× 312 / 2200	−2
11	5,935	2601.7	− 2583	18.7	× 306 / 2200	2.6
Sum, rounded to a whole point						−2

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	6,078	2428.2	− 2432	−3.8	× 285 / 2174	−0.5
4	6,081	2461.8	− 2473	−11.2	× 298 / 2174	−1.5
5	6,082	2518.2	− 2502	16.2	× 317 / 2174	2.4
6	6,085	2528.8	− 2531	−2.2	× 320 / 2174	−0.3
7	6,086	2544.2	− 2552	−7.8	× 343 / 2174	−1.2
8	6,089	2560.7	− 2567	−6.3	× 318 / 2174	−0.9
11	6,091	2613.9	− 2583	30.9	× 293 / 2174	4.2
Sum, rounded to a whole point						2

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	6,068	2439.6	− 2432	7.6	× 280 / 2165	1
4	6,071	2469.3	− 2473	−3.7	× 293 / 2165	−0.5
5	6,072	2504.8	− 2502	2.8	× 292 / 2165	0.4
6	6,075	2526.0	− 2531	−5	× 329 / 2165	−0.8
7	6,076	2554.2	− 2552	2.2	× 308 / 2165	0.3
8	6,079	2563.8	− 2567	−3.2	× 349 / 2165	−0.5
11	6,080	2568.3	− 2583	−14.7	× 314 / 2165	−2.1
Sum, rounded to a whole point						−2

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	6,128	2443.1	− 2432	11.1	× 277 / 2056	1.5
4	6,129	2476.2	− 2473	3.2	× 281 / 2056	0.4
5	6,130	2509.3	− 2502	7.3	× 289 / 2056	1
6	6,131	2524.7	− 2531	−6.3	× 287 / 2056	−0.9
7	6,132	2540.1	− 2552	−11.9	× 327 / 2056	−1.9
8	6,133	2552.0	− 2567	−15	× 304 / 2056	−2.2
11	6,134	2622.0	− 2583	39	× 291 / 2056	5.5
Sum, rounded to a whole point						3

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
11	5,940	2603.1	− 2583	20.1	× 245 / 245	20.1
Sum, rounded to a whole point						20

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	6,017	2437.2	− 2432	5.2	× 273 / 1873	0.8
4	6,018	2484.4	− 2473	11.4	× 274 / 1873	1.7
5	6,019	2527.9	− 2502	25.9	× 245 / 1873	3.4
6	6,020	2513.0	− 2531	−18	× 277 / 1873	−2.7
7	6,021	2549.4	− 2552	−2.6	× 269 / 1873	−0.4
8	6,022	2544.9	− 2567	−22.1	× 257 / 1873	−3
11	6,023	2587.5	− 2583	4.5	× 278 / 1873	0.7
Sum, rounded to a whole point						0

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	6,007	2435.2	− 2432	3.2	× 286 / 1884	0.5
4	6,008	2482.9	− 2473	9.9	× 280 / 1884	1.5
5	6,009	2523.9	− 2502	21.9	× 270 / 1884	3.1
6	6,010	2533.5	− 2531	2.5	× 244 / 1884	0.3
7	6,011	2548.8	− 2552	−3.2	× 253 / 1884	−0.4
8	6,012	2536.4	− 2567	−30.6	× 261 / 1884	−4.2
11	6,013	2576.6	− 2583	−6.4	× 290 / 1884	−1
Sum, rounded to a whole point						0

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	5,944	2431.2	− 2432	−0.8	× 282 / 1908	−0.1
4	5,945	2474.9	− 2473	1.9	× 282 / 1908	0.3
5	5,946	2507.0	− 2502	5	× 290 / 1908	0.8
6	5,947	2541.8	− 2531	10.8	× 286 / 1908	1.6
7	5,948	2560.8	− 2552	8.8	× 250 / 1908	1.2
8	5,949	2554.3	− 2567	−12.7	× 258 / 1908	−1.7
11	5,950	2577.4	− 2583	−5.6	× 260 / 1908	−0.8
Sum, rounded to a whole point						1

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	5,910	2444.1	− 2432	12.1	× 264 / 1921	1.7
4	5,911	2480.9	− 2473	7.9	× 279 / 1921	1.1
5	5,912	2522.5	− 2502	20.5	× 282 / 1921	3
6	5,913	2543.0	− 2531	12	× 283 / 1921	1.8
7	5,914	2571.9	− 2552	19.9	× 290 / 1921	3
8	5,915	2579.0	− 2567	12	× 252 / 1921	1.6
11	5,916	2553.9	− 2583	−29.1	× 271 / 1921	−4.1
Sum, rounded to a whole point						8

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. 4, −2, 2, −2, 3, 20, 0, 0, 1, 8 → 3.4
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 6 · 2016→2017: 4 · 2017→2018: 4 · 2018→2019: 5 · 2019→2021: 17 · 2021→2022: 20 · 2022→2023: 0 · 2023→2024: 1 · 2024→2025: 7 → average 7.1
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 7.1 × 2.66 = 18.9. Upper limit 22.3, lower limit −15.5.

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.