Glendora 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	24,155	2439.1	− 2436	3.1	× 532 / 3962	0.4
4	24,158	2494.5	− 2485	9.5	× 540 / 3962	1.3
5	24,159	2515.6	− 2528	−12.4	× 557 / 3962	−1.7
6	24,162	2549.0	− 2552	−3	× 591 / 3962	−0.4
7	24,163	2583.7	− 2567	16.7	× 586 / 3962	2.5
8	24,166	2582.4	− 2586	−3.6	× 601 / 3962	−0.5
11	24,167	2612.5	− 2628	−15.5	× 555 / 3962	−2.2
Sum, rounded to a whole point						−1

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	22,559	2444.7	− 2436	8.7	× 493 / 4016	1.1
4	22,561	2499.0	− 2485	14	× 534 / 4016	1.9
5	22,563	2523.3	− 2528	−4.7	× 551 / 4016	−0.6
6	22,566	2560.5	− 2552	8.5	× 588 / 4016	1.2
7	22,568	2588.8	− 2567	21.8	× 644 / 4016	3.5
8	22,569	2610.1	− 2586	24.1	× 585 / 4016	3.5
11	22,571	2631.4	− 2628	3.4	× 621 / 4016	0.5
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	22,974	2457.0	− 2436	21	× 540 / 4078	2.8
4	22,977	2499.5	− 2485	14.5	× 496 / 4078	1.8
5	22,979	2520.2	− 2528	−7.8	× 543 / 4078	−1
6	22,981	2564.1	− 2552	12.1	× 566 / 4078	1.7
7	22,983	2584.0	− 2567	17	× 592 / 4078	2.5
8	22,984	2603.6	− 2586	17.6	× 642 / 4078	2.8
11	22,986	2625.9	− 2628	−2.1	× 699 / 4078	−0.4
Sum, rounded to a whole point						10

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	22,972	2456.8	− 2436	20.8	× 454 / 3854	2.5
4	22,974	2503.2	− 2485	18.2	× 554 / 3854	2.6
5	22,976	2533.8	− 2528	5.8	× 514 / 3854	0.8
6	22,977	2566.6	− 2552	14.6	× 575 / 3854	2.2
7	22,979	2579.5	− 2567	12.5	× 584 / 3854	1.9
8	22,982	2589.6	− 2586	3.6	× 590 / 3854	0.6
11	22,983	2611.0	− 2628	−17	× 583 / 3854	−2.6
Sum, rounded to a whole point						8

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	23,157	2457.1	− 2436	21.1	× 463 / 3750	2.6
4	23,158	2505.3	− 2485	20.3	× 459 / 3750	2.5
5	23,159	2535.1	− 2528	7.1	× 558 / 3750	1.1
6	23,160	2562.4	− 2552	10.4	× 537 / 3750	1.5
7	23,161	2598.2	− 2567	31.2	× 592 / 3750	4.9
8	23,162	2585.7	− 2586	−0.3	× 568 / 3750	0
11	23,163	2642.1	− 2628	14.1	× 573 / 3750	2.2
Sum, rounded to a whole point						15

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	23,124	2451.7	− 2436	15.7	× 415 / 3358	1.9
4	23,125	2495.9	− 2485	10.9	× 457 / 3358	1.5
5	23,126	2517.4	− 2528	−10.6	× 432 / 3358	−1.4
6	23,127	2536.3	− 2552	−15.7	× 469 / 3358	−2.2
7	23,128	2562.6	− 2567	−4.4	× 463 / 3358	−0.6
8	23,129	2568.8	− 2586	−17.2	× 550 / 3358	−2.8
11	23,130	2589.1	− 2628	−38.9	× 572 / 3358	−6.6
Sum, rounded to a whole point						−10

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	23,097	2456.4	− 2436	20.4	× 454 / 3283	2.8
4	23,098	2503.1	− 2485	18.1	× 422 / 3283	2.3
5	23,099	2519.2	− 2528	−8.8	× 453 / 3283	−1.2
6	23,100	2546.6	− 2552	−5.4	× 430 / 3283	−0.7
7	23,101	2568.7	− 2567	1.7	× 484 / 3283	0.3
8	23,102	2574.8	− 2586	−11.2	× 467 / 3283	−1.6
11	23,103	2604.8	− 2628	−23.2	× 573 / 3283	−4
Sum, rounded to a whole point						−2

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	22,957	2448.3	− 2436	12.3	× 433 / 3242	1.6
4	22,958	2497.6	− 2485	12.6	× 457 / 3242	1.8
5	22,959	2515.4	− 2528	−12.6	× 425 / 3242	−1.7
6	22,960	2547.7	− 2552	−4.3	× 483 / 3242	−0.6
7	22,961	2569.5	− 2567	2.5	× 437 / 3242	0.3
8	22,962	2583.5	− 2586	−2.5	× 479 / 3242	−0.4
11	22,963	2609.7	− 2628	−18.3	× 528 / 3242	−3
Sum, rounded to a whole point						−2

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	22,864	2457.4	− 2436	21.4	× 429 / 3283	2.8
4	22,865	2489.2	− 2485	4.2	× 444 / 3283	0.6
5	22,866	2526.1	− 2528	−1.9	× 475 / 3283	−0.3
6	22,867	2550.6	− 2552	−1.4	× 458 / 3283	−0.2
7	22,868	2587.0	− 2567	20	× 478 / 3283	2.9
8	22,869	2587.7	− 2586	1.7	× 442 / 3283	0.2
11	22,870	2623.1	− 2628	−4.9	× 557 / 3283	−0.8
Sum, rounded to a whole point						5

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	22,928	2450.8	− 2436	14.8	× 398 / 3217	1.8
4	22,929	2494.2	− 2485	9.2	× 437 / 3217	1.2
5	22,930	2513.3	− 2528	−14.7	× 452 / 3217	−2.1
6	22,931	2547.6	− 2552	−4.4	× 491 / 3217	−0.7
7	22,932	2576.1	− 2567	9.1	× 464 / 3217	1.3
8	22,933	2604.6	− 2586	18.6	× 481 / 3217	2.8
11	22,934	2609.2	− 2628	−18.8	× 494 / 3217	−2.9
Sum, rounded to a whole point						2

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −1, 11, 10, 8, 15, −10, −2, −2, 5, 2 → 3.6
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 12 · 2016→2017: 1 · 2017→2018: 2 · 2018→2019: 7 · 2019→2022: 25 · 2022→2023: 8 · 2023→2024: 0 · 2024→2025: 7 · 2025→2026: 3 → average 7.2
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 7.2 × 2.66 = 19.2. Upper limit 22.8, lower limit −15.6.

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.

Glendora Unified