Bellflower Unified: english

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	21,354	2407.9	− 2432	−24.1	× 1014 / 6804	−3.6
4	21,357	2439.5	− 2473	−33.5	× 933 / 6804	−4.6
5	21,358	2486.2	− 2502	−15.8	× 937 / 6804	−2.2
6	21,361	2525.8	− 2531	−5.2	× 999 / 6804	−0.8
7	21,362	2533.6	− 2552	−18.4	× 958 / 6804	−2.6
8	21,365	2554.6	− 2567	−12.4	× 949 / 6804	−1.7
11	21,366	2597.5	− 2583	14.5	× 1014 / 6804	2.2
Sum, rounded to a whole point						−13

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	20,238	2414.2	− 2432	−17.8	× 920 / 6669	−2.5
4	20,241	2439.0	− 2473	−34	× 992 / 6669	−5.1
5	20,243	2485.0	− 2502	−17	× 924 / 6669	−2.4
6	20,244	2524.1	− 2531	−6.9	× 950 / 6669	−1
7	20,246	2536.3	− 2552	−15.7	× 939 / 6669	−2.2
8	20,248	2564.0	− 2567	−3	× 950 / 6669	−0.4
11	20,251	2610.3	− 2583	27.3	× 994 / 6669	4.1
Sum, rounded to a whole point						−9

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	20,556	2404.1	− 2432	−27.9	× 902 / 6427	−3.9
4	20,559	2443.4	− 2473	−29.6	× 899 / 6427	−4.1
5	20,561	2484.1	− 2502	−17.9	× 968 / 6427	−2.7
6	20,563	2519.7	− 2531	−11.3	× 921 / 6427	−1.6
7	20,565	2532.1	− 2552	−19.9	× 897 / 6427	−2.8
8	20,567	2567.0	− 2567	0	× 947 / 6427	0
11	20,569	2607.8	− 2583	24.8	× 893 / 6427	3.4
Sum, rounded to a whole point						−12

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	20,545	2421.8	− 2432	−10.2	× 809 / 6226	−1.3
4	20,547	2443.5	− 2473	−29.5	× 924 / 6226	−4.4
5	20,549	2495.6	− 2502	−6.4	× 873 / 6226	−0.9
6	20,551	2522.1	− 2531	−8.9	× 970 / 6226	−1.4
7	20,553	2532.3	− 2552	−19.7	× 874 / 6226	−2.8
8	20,555	2560.6	− 2567	−6.4	× 876 / 6226	−0.9
11	20,557	2602.4	− 2583	19.4	× 900 / 6226	2.8
Sum, rounded to a whole point						−9

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	20,719	2425.9	− 2432	−6.1	× 838 / 6118	−0.8
4	20,720	2450.4	− 2473	−22.6	× 807 / 6118	−3
5	20,721	2493.8	− 2502	−8.2	× 891 / 6118	−1.2
6	20,722	2521.5	− 2531	−9.5	× 882 / 6118	−1.4
7	20,723	2539.0	− 2552	−13	× 917 / 6118	−1.9
8	20,724	2560.1	− 2567	−6.9	× 869 / 6118	−1
11	20,725	2605.4	− 2583	22.4	× 914 / 6118	3.3
Sum, rounded to a whole point						−6

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
11	20,214	2693.8	− 2583	110.8	× 108 / 108	110.8
Sum, rounded to a whole point						111

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	20,734	2388.8	− 2432	−43.2	× 710 / 5237	−5.9
4	20,735	2440.9	− 2473	−32.1	× 733 / 5237	−4.5
5	20,736	2475.1	− 2502	−26.9	× 713 / 5237	−3.7
6	20,737	2514.0	− 2531	−17	× 791 / 5237	−2.6
7	20,738	2528.5	− 2552	−23.5	× 721 / 5237	−3.2
8	20,739	2535.6	− 2567	−31.4	× 810 / 5237	−4.9
11	20,740	2573.8	− 2583	−9.2	× 759 / 5237	−1.3
Sum, rounded to a whole point						−26

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	20,695	2396.1	− 2432	−35.9	× 713 / 5195	−4.9
4	20,696	2438.4	− 2473	−34.6	× 721 / 5195	−4.8
5	20,697	2475.8	− 2502	−26.2	× 734 / 5195	−3.7
6	20,698	2504.8	− 2531	−26.2	× 737 / 5195	−3.7
7	20,699	2530.7	− 2552	−21.3	× 764 / 5195	−3.1
8	20,700	2548.9	− 2567	−18.1	× 706 / 5195	−2.5
11	20,701	2593.0	− 2583	10	× 820 / 5195	1.6
Sum, rounded to a whole point						−21

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	20,571	2393.1	− 2432	−38.9	× 660 / 5065	−5.1
4	20,572	2433.6	− 2473	−39.4	× 688 / 5065	−5.4
5	20,573	2473.3	− 2502	−28.7	× 725 / 5065	−4.1
6	20,574	2518.4	− 2531	−12.6	× 744 / 5065	−1.9
7	20,575	2519.8	− 2552	−32.2	× 726 / 5065	−4.6
8	20,576	2538.8	− 2567	−28.2	× 776 / 5065	−4.3
11	20,577	2605.3	− 2583	22.3	× 746 / 5065	3.3
Sum, rounded to a whole point						−22

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	20,486	2407.3	− 2432	−24.7	× 628 / 4926	−3.1
4	20,487	2432.4	− 2473	−40.6	× 655 / 4926	−5.4
5	20,488	2487.5	− 2502	−14.5	× 688 / 4926	−2
6	20,489	2518.7	− 2531	−12.3	× 729 / 4926	−1.8
7	20,490	2534.0	− 2552	−18	× 737 / 4926	−2.7
8	20,491	2546.5	− 2567	−20.5	× 710 / 4926	−3
11	20,492	2609.9	− 2583	26.9	× 779 / 4926	4.3
Sum, rounded to a whole point						−14

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	20,552	2397.9	− 2432	−34.1	× 622 / 4621	−4.6
4	20,553	2445.1	− 2473	−27.9	× 644 / 4621	−3.9
5	20,554	2477.4	− 2502	−24.6	× 659 / 4621	−3.5
6	20,555	2525.3	− 2531	−5.7	× 689 / 4621	−0.8
7	20,556	2533.2	− 2552	−18.8	× 640 / 4621	−2.6
8	20,557	2544.0	− 2567	−23	× 716 / 4621	−3.6
11	20,558	2612.1	− 2583	29.1	× 651 / 4621	4.1
Sum, rounded to a whole point						−15

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −13, −9, −12, −9, −6, 111, −26, −21, −22, −14, −15 → −3.3
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 4 · 2016→2017: 3 · 2017→2018: 3 · 2018→2019: 3 · 2019→2021: 117 · 2021→2022: 137 · 2022→2023: 5 · 2023→2024: 1 · 2024→2025: 8 · 2025→2026: 1 → average 28.2
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 28.2 × 2.66 = 75. Upper limit 71.7, lower limit −78.3.

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.

Bellflower Unified