Barstow Unified: 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	64,543	2388.1	− 2436	−47.9	× 510 / 3022	−8.1
4	64,544	2427.0	− 2485	−58	× 491 / 3022	−9.4
5	64,547	2457.5	− 2528	−70.5	× 477 / 3022	−11.1
6	64,548	2491.6	− 2552	−60.4	× 433 / 3022	−8.7
7	64,551	2488.3	− 2567	−78.7	× 401 / 3022	−10.4
8	64,552	2511.0	− 2586	−75	× 386 / 3022	−9.6
11	64,555	2501.8	− 2628	−126.2	× 324 / 3022	−13.5
Sum, rounded to a whole point						−71

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	59,871	2385.5	− 2436	−50.5	× 481 / 3113	−7.8
4	59,874	2422.4	− 2485	−62.6	× 523 / 3113	−10.5
5	59,875	2439.2	− 2528	−88.8	× 503 / 3113	−14.3
6	59,877	2483.1	− 2552	−68.9	× 465 / 3113	−10.3
7	59,879	2481.3	− 2567	−85.7	× 405 / 3113	−11.1
8	59,882	2509.9	− 2586	−76.1	× 371 / 3113	−9.1
11	59,883	2521.9	− 2628	−106.1	× 365 / 3113	−12.4
Sum, rounded to a whole point						−76

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	61,585	2381.4	− 2436	−54.6	× 534 / 3195	−9.1
4	61,586	2424.4	− 2485	−60.6	× 485 / 3195	−9.2
5	61,588	2437.8	− 2528	−90.2	× 539 / 3195	−15.2
6	61,590	2462.1	− 2552	−89.9	× 488 / 3195	−13.7
7	61,592	2474.8	− 2567	−92.2	× 426 / 3195	−12.3
8	61,594	2504.5	− 2586	−81.5	× 386 / 3195	−9.8
11	61,597	2505.3	− 2628	−122.7	× 337 / 3195	−12.9
Sum, rounded to a whole point						−82

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	61,685	2377.4	− 2436	−58.6	× 550 / 3296	−9.8
4	61,688	2418.0	− 2485	−67	× 522 / 3296	−10.6
5	61,689	2436.2	− 2528	−91.8	× 480 / 3296	−13.4
6	61,692	2466.6	− 2552	−85.4	× 530 / 3296	−13.7
7	61,693	2456.8	− 2567	−110.2	× 426 / 3296	−14.2
8	61,696	2485.8	− 2586	−100.2	× 427 / 3296	−13
11	61,697	2512.5	− 2628	−115.5	× 361 / 3296	−12.7
Sum, rounded to a whole point						−87

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	61,954	2378.4	− 2436	−57.6	× 529 / 3277	−9.3
4	61,955	2417.8	− 2485	−67.2	× 538 / 3277	−11
5	61,956	2427.9	− 2528	−100.1	× 530 / 3277	−16.2
6	61,957	2458.0	− 2552	−94	× 481 / 3277	−13.8
7	61,958	2458.7	− 2567	−108.3	× 457 / 3277	−15.1
8	61,959	2464.7	− 2586	−121.3	× 413 / 3277	−15.3
11	61,960	2502.6	− 2628	−125.4	× 329 / 3277	−12.6
Sum, rounded to a whole point						−93

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	60,567	2348.8	− 2436	−87.2	× 435 / 2562	−14.8
4	60,568	2378.5	− 2485	−106.5	× 422 / 2562	−17.5
5	60,569	2404.4	− 2528	−123.6	× 393 / 2562	−19
6	60,570	2412.7	− 2552	−139.3	× 423 / 2562	−23
7	60,571	2438.0	− 2567	−129	× 379 / 2562	−19.1
8	60,572	2448.0	− 2586	−138	× 321 / 2562	−17.3
11	60,573	2515.6	− 2628	−112.4	× 189 / 2562	−8.3
Sum, rounded to a whole point						−119

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	62,039	2361.2	− 2436	−74.8	× 494 / 3068	−12
4	62,040	2392.8	− 2485	−92.2	× 500 / 3068	−15
5	62,041	2404.1	− 2528	−123.9	× 488 / 3068	−19.7
6	62,042	2427.4	− 2552	−124.6	× 472 / 3068	−19.2
7	62,043	2421.9	− 2567	−145.1	× 396 / 3068	−18.7
8	62,044	2441.7	− 2586	−144.3	× 351 / 3068	−16.5
11	62,045	2449.1	− 2628	−178.9	× 367 / 3068	−21.4
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	61,987	2357.2	− 2436	−78.8	× 543 / 3191	−13.4
4	61,988	2392.6	− 2485	−92.4	× 474 / 3191	−13.7
5	61,989	2391.7	− 2528	−136.3	× 499 / 3191	−21.3
6	61,990	2411.3	− 2552	−140.7	× 489 / 3191	−21.6
7	61,991	2428.8	− 2567	−138.2	× 429 / 3191	−18.6
8	61,992	2421.0	− 2586	−165	× 408 / 3191	−21.1
11	61,993	2460.9	− 2628	−167.1	× 349 / 3191	−18.3
Sum, rounded to a whole point						−128

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	61,942	2365.8	− 2436	−70.2	× 498 / 3142	−11.1
4	61,943	2392.2	− 2485	−92.8	× 547 / 3142	−16.2
5	61,944	2404.4	− 2528	−123.6	× 480 / 3142	−18.9
6	61,945	2401.7	− 2552	−150.3	× 477 / 3142	−22.8
7	61,946	2403.1	− 2567	−163.9	× 391 / 3142	−20.4
8	61,947	2416.2	− 2586	−169.8	× 400 / 3142	−21.6
11	61,948	2464.5	− 2628	−163.5	× 349 / 3142	−18.2
Sum, rounded to a whole point						−129

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	61,707	2359.5	− 2436	−76.5	× 526 / 3008	−13.4
4	61,708	2397.3	− 2485	−87.7	× 468 / 3008	−13.6
5	61,709	2392.3	− 2528	−135.7	× 482 / 3008	−21.7
6	61,710	2397.8	− 2552	−154.2	× 419 / 3008	−21.5
7	61,711	2411.8	− 2567	−155.2	× 404 / 3008	−20.8
8	61,712	2408.5	− 2586	−177.5	× 362 / 3008	−21.4
11	61,713	2491.0	− 2628	−137	× 347 / 3008	−15.8
Sum, rounded to a whole point						−128

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	61,668	2364.2	− 2436	−71.8	× 465 / 2941	−11.4
4	61,669	2395.9	− 2485	−89.1	× 509 / 2941	−15.4
5	61,670	2388.2	− 2528	−139.8	× 424 / 2941	−20.2
6	61,671	2399.4	− 2552	−152.6	× 458 / 2941	−23.8
7	61,672	2409.2	− 2567	−157.8	× 366 / 2941	−19.6
8	61,673	2409.0	− 2586	−177	× 384 / 2941	−23.1
11	61,674	2523.2	− 2628	−104.8	× 335 / 2941	−11.9
Sum, rounded to a whole point						−125

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −71, −76, −82, −87, −93, −119, −123, −128, −129, −128, −125 → −105.5
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 5 · 2016→2017: 6 · 2017→2018: 5 · 2018→2019: 6 · 2019→2021: 26 · 2021→2022: 4 · 2022→2023: 5 · 2023→2024: 1 · 2024→2025: 1 · 2025→2026: 3 → average 6.2
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 6.2 × 2.66 = 16.5. Upper limit −89, lower limit −122.

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.

Barstow Unified