Bonita 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	21,639	2441.9	− 2436	5.9	× 734 / 5240	0.8
4	21,642	2478.6	− 2485	−6.4	× 707 / 5240	−0.9
5	21,643	2502.0	− 2528	−26	× 663 / 5240	−3.3
6	21,646	2537.4	− 2552	−14.6	× 778 / 5240	−2.2
7	21,647	2553.3	− 2567	−13.7	× 798 / 5240	−2.1
8	21,650	2552.5	− 2586	−33.5	× 745 / 5240	−4.8
11	21,651	2584.6	− 2628	−43.4	× 815 / 5240	−6.8
Sum, rounded to a whole point						−19

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	20,476	2461.9	− 2436	25.9	× 703 / 5312	3.4
4	20,478	2484.1	− 2485	−0.9	× 727 / 5312	−0.1
5	20,480	2514.8	− 2528	−13.2	× 720 / 5312	−1.8
6	20,483	2550.0	− 2552	−2	× 694 / 5312	−0.3
7	20,484	2556.8	− 2567	−10.2	× 805 / 5312	−1.5
8	20,486	2572.4	− 2586	−13.6	× 794 / 5312	−2
11	20,488	2590.3	− 2628	−37.7	× 869 / 5312	−6.2
Sum, rounded to a whole point						−8

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	20,816	2465.9	− 2436	29.9	× 717 / 5239	4.1
4	20,818	2499.0	− 2485	14	× 712 / 5239	1.9
5	20,821	2514.6	− 2528	−13.4	× 742 / 5239	−1.9
6	20,822	2574.0	− 2552	22	× 715 / 5239	3
7	20,824	2564.0	− 2567	−3	× 715 / 5239	−0.4
8	20,827	2585.4	− 2586	−0.6	× 810 / 5239	−0.1
11	20,828	2606.1	− 2628	−21.9	× 828 / 5239	−3.5
Sum, rounded to a whole point						3

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	20,808	2471.7	− 2436	35.7	× 680 / 5165	4.7
4	20,810	2499.4	− 2485	14.4	× 719 / 5165	2
5	20,812	2535.3	− 2528	7.3	× 728 / 5165	1
6	20,814	2558.7	− 2552	6.7	× 776 / 5165	1
7	20,816	2577.0	− 2567	10	× 724 / 5165	1.4
8	20,818	2593.0	− 2586	7	× 725 / 5165	1
11	20,820	2608.5	− 2628	−19.5	× 813 / 5165	−3.1
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	20,987	2482.9	− 2436	46.9	× 697 / 5196	6.3
4	20,988	2511.2	− 2485	26.2	× 684 / 5196	3.4
5	20,989	2537.5	− 2528	9.5	× 732 / 5196	1.3
6	20,990	2564.3	− 2552	12.3	× 738 / 5196	1.7
7	20,991	2573.4	− 2567	6.4	× 791 / 5196	1
8	20,992	2606.5	− 2586	20.5	× 734 / 5196	2.9
11	20,993	2614.3	− 2628	−13.7	× 820 / 5196	−2.2
Sum, rounded to a whole point						15

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
11	20,452	2677.4	− 2628	49.4	× 21 / 21	49.4
Sum, rounded to a whole point						49

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	20,964	2474.4	− 2436	38.4	× 667 / 4894	5.2
4	20,965	2502.6	− 2485	17.6	× 693 / 4894	2.5
5	20,966	2519.4	− 2528	−8.6	× 706 / 4894	−1.2
6	20,967	2550.4	− 2552	−1.6	× 693 / 4894	−0.2
7	20,968	2559.0	− 2567	−8	× 697 / 4894	−1.1
8	20,969	2577.5	− 2586	−8.5	× 714 / 4894	−1.2
11	20,970	2624.6	− 2628	−3.4	× 724 / 4894	−0.5
Sum, rounded to a whole point						3

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	20,925	2482.0	− 2436	46	× 675 / 5014	6.2
4	20,926	2517.1	− 2485	32.1	× 693 / 5014	4.4
5	20,927	2536.8	− 2528	8.8	× 700 / 5014	1.2
6	20,928	2542.5	− 2552	−9.5	× 719 / 5014	−1.4
7	20,929	2584.8	− 2567	17.8	× 728 / 5014	2.6
8	20,930	2587.7	− 2586	1.7	× 703 / 5014	0.2
11	20,931	2615.3	− 2628	−12.7	× 796 / 5014	−2
Sum, rounded to a whole point						11

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	20,801	2483.2	− 2436	47.2	× 655 / 4988	6.2
4	20,802	2515.0	− 2485	30	× 697 / 4988	4.2
5	20,803	2545.5	− 2528	17.5	× 703 / 4988	2.5
6	20,804	2562.8	− 2552	10.8	× 707 / 4988	1.5
7	20,805	2572.9	− 2567	5.9	× 734 / 4988	0.9
8	20,806	2615.2	− 2586	29.2	× 716 / 4988	4.2
11	20,807	2630.4	− 2628	2.4	× 776 / 4988	0.4
Sum, rounded to a whole point						20

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	20,724	2491.3	− 2436	55.3	× 705 / 5057	7.7
4	20,725	2518.8	− 2485	33.8	× 685 / 5057	4.6
5	20,726	2552.4	− 2528	24.4	× 710 / 5057	3.4
6	20,727	2574.7	− 2552	22.7	× 733 / 5057	3.3
7	20,728	2581.3	− 2567	14.3	× 734 / 5057	2.1
8	20,729	2618.9	− 2586	32.9	× 728 / 5057	4.7
11	20,730	2638.5	− 2628	10.5	× 762 / 5057	1.6
Sum, rounded to a whole point						27

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −19, −8, 3, 8, 15, 49, 3, 11, 20, 27 → 10.9
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 11 · 2016→2017: 11 · 2017→2018: 5 · 2018→2019: 7 · 2019→2021: 34 · 2021→2022: 46 · 2022→2023: 8 · 2023→2024: 9 · 2024→2025: 7 → average 15.3
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 15.3 × 2.66 = 40.7. Upper limit 51.6, lower limit −29.8.

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.