San Luis Coastal 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	81,878	2439.3	− 2436	3.3	× 552 / 3805	0.5
4	81,881	2488.1	− 2485	3.1	× 595 / 3805	0.5
5	81,882	2518.6	− 2528	−9.4	× 572 / 3805	−1.4
6	81,885	2539.4	− 2552	−12.6	× 578 / 3805	−1.9
7	81,886	2562.8	− 2567	−4.2	× 508 / 3805	−0.6
8	81,889	2577.4	− 2586	−8.6	× 524 / 3805	−1.2
11	81,890	2603.0	− 2628	−25	× 476 / 3805	−3.1
Sum, rounded to a whole point						−7

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	75,928	2460.0	− 2436	24	× 532 / 3849	3.3
4	75,930	2507.3	− 2485	22.3	× 554 / 3849	3.2
5	75,933	2531.8	− 2528	3.8	× 601 / 3849	0.6
6	75,934	2565.9	− 2552	13.9	× 578 / 3849	2.1
7	75,937	2585.6	− 2567	18.6	× 587 / 3849	2.8
8	75,938	2604.1	− 2586	18.1	× 504 / 3849	2.4
11	75,941	2598.4	− 2628	−29.6	× 493 / 3849	−3.8
Sum, rounded to a whole point						11

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	77,961	2462.7	− 2436	26.7	× 553 / 3966	3.7
4	77,963	2516.9	− 2485	31.9	× 549 / 3966	4.4
5	77,966	2541.9	− 2528	13.9	× 560 / 3966	2
6	77,968	2565.2	− 2552	13.2	× 629 / 3966	2.1
7	77,969	2596.7	− 2567	29.7	× 569 / 3966	4.3
8	77,971	2603.6	− 2586	17.6	× 569 / 3966	2.5
11	77,973	2608.9	− 2628	−19.1	× 537 / 3966	−2.6
Sum, rounded to a whole point						16

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	78,117	2469.6	− 2436	33.6	× 536 / 3905	4.6
4	78,118	2508.6	− 2485	23.6	× 549 / 3905	3.3
5	78,121	2541.9	− 2528	13.9	× 551 / 3905	2
6	78,122	2574.7	− 2552	22.7	× 551 / 3905	3.2
7	78,125	2593.9	− 2567	26.9	× 621 / 3905	4.3
8	78,126	2604.0	− 2586	18	× 568 / 3905	2.6
11	78,129	2622.4	− 2628	−5.6	× 529 / 3905	−0.8
Sum, rounded to a whole point						19

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	78,650	2478.3	− 2436	42.3	× 549 / 3937	5.9
4	78,651	2522.5	− 2485	37.5	× 553 / 3937	5.3
5	78,652	2536.2	− 2528	8.2	× 554 / 3937	1.2
6	78,653	2572.5	− 2552	20.5	× 569 / 3937	3
7	78,654	2612.7	− 2567	45.7	× 586 / 3937	6.8
8	78,655	2615.9	− 2586	29.9	× 605 / 3937	4.6
11	78,656	2630.7	− 2628	2.7	× 521 / 3937	0.4
Sum, rounded to a whole point						27

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	77,215	2441.8	− 2436	5.8	× 411 / 3283	0.7
4	77,216	2495.4	− 2485	10.4	× 551 / 3283	1.7
5	77,217	2507.1	− 2528	−20.9	× 528 / 3283	−3.4
6	77,218	2537.8	− 2552	−14.2	× 515 / 3283	−2.2
7	77,219	2566.4	− 2567	−0.6	× 500 / 3283	−0.1
8	77,220	2587.9	− 2586	1.9	× 494 / 3283	0.3
11	77,221	2597.1	− 2628	−30.9	× 284 / 3283	−2.7
Sum, rounded to a whole point						−6

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	78,918	2474.1	− 2436	38.1	× 478 / 3736	4.9
4	78,919	2503.9	− 2485	18.9	× 471 / 3736	2.4
5	78,920	2519.9	− 2528	−8.1	× 571 / 3736	−1.2
6	78,921	2562.1	− 2552	10.1	× 537 / 3736	1.5
7	78,922	2578.0	− 2567	11	× 543 / 3736	1.6
8	78,923	2581.3	− 2586	−4.7	× 544 / 3736	−0.7
11	78,924	2607.8	− 2628	−20.2	× 592 / 3736	−3.2
Sum, rounded to a whole point						5

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	78,904	2464.3	− 2436	28.3	× 510 / 3723	3.9
4	78,905	2511.7	− 2485	26.7	× 487 / 3723	3.5
5	78,906	2521.0	− 2528	−7	× 489 / 3723	−0.9
6	78,907	2552.9	− 2552	0.9	× 592 / 3723	0.1
7	78,908	2587.0	− 2567	20	× 560 / 3723	3
8	78,909	2589.6	− 2586	3.6	× 529 / 3723	0.5
11	78,910	2613.3	− 2628	−14.7	× 556 / 3723	−2.2
Sum, rounded to a whole point						8

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	78,930	2471.1	− 2436	35.1	× 552 / 3798	5.1
4	78,931	2506.9	− 2485	21.9	× 525 / 3798	3
5	78,932	2544.4	− 2528	16.4	× 500 / 3798	2.2
6	78,933	2549.6	− 2552	−2.4	× 510 / 3798	−0.3
7	78,934	2576.6	− 2567	9.6	× 588 / 3798	1.5
8	78,935	2607.6	− 2586	21.6	× 555 / 3798	3.2
11	78,936	2594.2	− 2628	−33.8	× 568 / 3798	−5.1
Sum, rounded to a whole point						10

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	78,608	2454.5	− 2436	18.5	× 510 / 3863	2.4
4	78,609	2511.4	− 2485	26.4	× 568 / 3863	3.9
5	78,610	2521.6	− 2528	−6.4	× 552 / 3863	−0.9
6	78,611	2564.7	− 2552	12.7	× 521 / 3863	1.7
7	78,612	2572.8	− 2567	5.8	× 520 / 3863	0.8
8	78,613	2606.5	− 2586	20.5	× 585 / 3863	3.1
11	78,614	2606.2	− 2628	−21.8	× 607 / 3863	−3.4
Sum, rounded to a whole point						8

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	78,524	2461.2	− 2436	25.2	× 528 / 3753	3.5
4	78,525	2505.5	− 2485	20.5	× 517 / 3753	2.8
5	78,526	2535.2	− 2528	7.2	× 567 / 3753	1.1
6	78,527	2555.3	− 2552	3.3	× 538 / 3753	0.5
7	78,528	2589.6	− 2567	22.6	× 524 / 3753	3.2
8	78,529	2593.1	− 2586	7.1	× 514 / 3753	1
11	78,530	2619.6	− 2628	−8.4	× 565 / 3753	−1.3
Sum, rounded to a whole point						11

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −7, 11, 16, 19, 27, −6, 5, 8, 10, 8, 11 → 9.3
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 18 · 2016→2017: 5 · 2017→2018: 3 · 2018→2019: 8 · 2019→2021: 33 · 2021→2022: 11 · 2022→2023: 3 · 2023→2024: 2 · 2024→2025: 2 · 2025→2026: 3 → average 8.8
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 8.8 × 2.66 = 23.4. Upper limit 32.7, lower limit −14.1.

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.

San Luis Coastal Unified