Mountain View Whisman: 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	88,051	2455.8	− 2436	19.8	× 600 / 3119	3.8
4	88,053	2497.8	− 2485	12.8	× 584 / 3119	2.4
5	88,055	2539.3	− 2528	11.3	× 567 / 3119	2.1
6	88,057	2557.8	− 2552	5.8	× 483 / 3119	0.9
7	88,059	2574.1	− 2567	7.1	× 436 / 3119	1
8	88,061	2580.6	− 2586	−5.4	× 449 / 3119	−0.8
Sum, rounded to a whole point						9

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	81,726	2474.2	− 2436	38.2	× 590 / 3151	7.2
4	81,727	2508.2	− 2485	23.2	× 572 / 3151	4.2
5	81,729	2545.3	− 2528	17.3	× 562 / 3151	3.1
6	81,731	2571.1	− 2552	19.1	× 522 / 3151	3.2
7	81,734	2603.3	− 2567	36.3	× 477 / 3151	5.5
8	81,736	2604.4	− 2586	18.4	× 428 / 3151	2.5
Sum, rounded to a whole point						26

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	83,996	2482.6	− 2436	46.6	× 538 / 3180	7.9
4	83,998	2513.3	− 2485	28.3	× 581 / 3180	5.2
5	83,999	2545.2	− 2528	17.2	× 560 / 3180	3
6	84,002	2569.1	− 2552	17.1	× 514 / 3180	2.8
7	84,004	2601.7	− 2567	34.7	× 508 / 3180	5.5
8	84,006	2619.7	− 2586	33.7	× 479 / 3180	5.1
Sum, rounded to a whole point						29

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	84,218	2485.6	− 2436	49.6	× 539 / 3186	8.4
4	84,219	2524.4	− 2485	39.4	× 529 / 3186	6.5
5	84,222	2550.7	− 2528	22.7	× 575 / 3186	4.1
6	84,223	2573.6	− 2552	21.6	× 516 / 3186	3.5
7	84,226	2605.1	− 2567	38.1	× 516 / 3186	6.2
8	84,227	2607.5	− 2586	21.5	× 511 / 3186	3.4
Sum, rounded to a whole point						32

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	84,836	2485.6	− 2436	49.6	× 595 / 3206	9.2
4	84,837	2526.9	− 2485	41.9	× 532 / 3206	7
5	84,838	2565.6	− 2528	37.6	× 510 / 3206	6
6	84,839	2568.2	− 2552	16.2	× 530 / 3206	2.7
7	84,840	2592.4	− 2567	25.4	× 519 / 3206	4.1
8	84,841	2607.5	− 2586	21.5	× 520 / 3206	3.5
Sum, rounded to a whole point						32

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	85,005	2482.9	− 2436	46.9	× 539 / 2917	8.7
4	85,006	2514.3	− 2485	29.3	× 501 / 2917	5
5	85,007	2540.8	− 2528	12.8	× 522 / 2917	2.3
6	85,008	2546.8	− 2552	−5.2	× 462 / 2917	−0.8
7	85,009	2592.6	− 2567	25.6	× 456 / 2917	4
8	85,010	2594.2	− 2586	8.2	× 437 / 2917	1.2
Sum, rounded to a whole point						20

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	84,942	2467.1	− 2436	31.1	× 454 / 2877	4.9
4	84,943	2519.2	− 2485	34.2	× 527 / 2877	6.3
5	84,944	2554.8	− 2528	26.8	× 492 / 2877	4.6
6	84,945	2534.5	− 2552	−17.5	× 482 / 2877	−2.9
7	84,946	2567.8	− 2567	0.8	× 450 / 2877	0.1
8	84,947	2612.2	− 2586	26.2	× 472 / 2877	4.3
Sum, rounded to a whole point						17

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	84,933	2469.5	− 2436	33.5	× 524 / 2951	5.9
4	84,934	2518.4	− 2485	33.4	× 453 / 2951	5.1
5	84,935	2550.0	− 2528	22	× 524 / 2951	3.9
6	84,936	2558.7	− 2552	6.7	× 485 / 2951	1.1
7	84,937	2564.2	− 2567	−2.8	× 494 / 2951	−0.5
8	84,938	2599.7	− 2586	13.7	× 471 / 2951	2.2
Sum, rounded to a whole point						18

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	84,627	2469.3	− 2436	33.3	× 501 / 2939	5.7
4	84,628	2510.0	− 2485	25	× 526 / 2939	4.5
5	84,629	2551.2	− 2528	23.2	× 467 / 2939	3.7
6	84,630	2554.3	− 2552	2.3	× 482 / 2939	0.4
7	84,631	2588.5	− 2567	21.5	× 466 / 2939	3.4
8	84,632	2610.8	− 2586	24.8	× 497 / 2939	4.2
Sum, rounded to a whole point						22

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	84,400	2475.8	− 2436	39.8	× 499 / 2927	6.8
4	84,401	2522.3	− 2485	37.3	× 483 / 2927	6.2
5	84,402	2558.7	− 2528	30.7	× 529 / 2927	5.5
6	84,403	2558.2	− 2552	6.2	× 458 / 2927	1
7	84,404	2598.9	− 2567	31.9	× 484 / 2927	5.3
8	84,405	2626.9	− 2586	40.9	× 474 / 2927	6.6
Sum, rounded to a whole point						31

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. 9, 26, 29, 32, 32, 20, 17, 18, 22, 31 → 23.6
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 17 · 2016→2017: 3 · 2017→2018: 3 · 2018→2019: 0 · 2019→2022: 12 · 2022→2023: 3 · 2023→2024: 1 · 2024→2025: 4 · 2025→2026: 9 → average 5.8
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 5.8 × 2.66 = 15.4. Upper limit 39, lower limit 8.2.

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.

Mountain View Whisman