Dry Creek Joint Elementary: 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	53,714	2430.8	− 2432	−1.2	× 733 / 4678	−0.2
4	53,717	2482.7	− 2473	9.7	× 746 / 4678	1.5
5	53,718	2512.3	− 2502	10.3	× 772 / 4678	1.7
6	53,721	2526.3	− 2531	−4.7	× 738 / 4678	−0.7
7	53,722	2549.9	− 2552	−2.1	× 822 / 4678	−0.4
8	53,725	2579.7	− 2567	12.7	× 867 / 4678	2.4
Sum, rounded to a whole point						4

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	49,903	2435.1	− 2432	3.1	× 662 / 4579	0.4
4	49,905	2478.9	− 2473	5.9	× 769 / 4579	1
5	49,908	2526.6	− 2502	24.6	× 771 / 4579	4.1
6	49,909	2544.7	− 2531	13.7	× 768 / 4579	2.3
7	49,912	2557.3	− 2552	5.3	× 764 / 4579	0.9
8	49,914	2578.4	− 2567	11.4	× 845 / 4579	2.1
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	51,306	2429.8	− 2432	−2.2	× 664 / 4511	−0.3
4	51,308	2471.7	− 2473	−1.3	× 695 / 4511	−0.2
5	51,310	2497.3	− 2502	−4.7	× 785 / 4511	−0.8
6	51,312	2538.4	− 2531	7.4	× 797 / 4511	1.3
7	51,314	2550.9	− 2552	−1.1	× 783 / 4511	−0.2
8	51,316	2558.4	− 2567	−8.6	× 787 / 4511	−1.5
Sum, rounded to a whole point						−2

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	51,331	2439.8	− 2432	7.8	× 701 / 4557	1.2
4	51,334	2488.3	− 2473	15.3	× 684 / 4557	2.3
5	51,335	2514.2	− 2502	12.2	× 723 / 4557	1.9
6	51,337	2532.0	− 2531	1	× 786 / 4557	0.2
7	51,339	2580.7	− 2552	28.7	× 843 / 4557	5.3
8	51,341	2572.3	− 2567	5.3	× 820 / 4557	1
Sum, rounded to a whole point						12

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	51,526	2448.9	− 2432	16.9	× 703 / 4421	2.7
4	51,527	2488.3	− 2473	15.3	× 678 / 4421	2.3
5	51,528	2533.3	− 2502	31.3	× 674 / 4421	4.8
6	51,529	2539.1	− 2531	8.1	× 729 / 4421	1.3
7	51,530	2569.8	− 2552	17.8	× 798 / 4421	3.2
8	51,531	2585.8	− 2567	18.8	× 839 / 4421	3.6
Sum, rounded to a whole point						18

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	50,283	2429.1	− 2432	−2.9	× 643 / 4105	−0.5
4	50,284	2474.9	− 2473	1.9	× 715 / 4105	0.3
5	50,285	2520.9	− 2502	18.9	× 701 / 4105	3.2
6	50,286	2528.4	− 2531	−2.6	× 666 / 4105	−0.4
7	50,287	2579.0	− 2552	27	× 694 / 4105	4.6
8	50,288	2579.3	− 2567	12.3	× 686 / 4105	2.1
Sum, rounded to a whole point						9

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	51,452	2431.3	− 2432	−0.7	× 663 / 4190	−0.1
4	51,453	2475.2	− 2473	2.2	× 680 / 4190	0.4
5	51,454	2521.5	− 2502	19.5	× 738 / 4190	3.4
6	51,455	2535.2	− 2531	4.2	× 710 / 4190	0.7
7	51,456	2564.7	− 2552	12.7	× 687 / 4190	2.1
8	51,457	2579.2	− 2567	12.2	× 712 / 4190	2.1
Sum, rounded to a whole point						9

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	51,417	2430.2	− 2432	−1.8	× 751 / 4329	−0.3
4	51,418	2470.4	− 2473	−2.6	× 685 / 4329	−0.4
5	51,419	2512.7	− 2502	10.7	× 700 / 4329	1.7
6	51,420	2533.6	− 2531	2.6	× 758 / 4329	0.5
7	51,421	2569.5	− 2552	17.5	× 739 / 4329	3
8	51,422	2570.2	− 2567	3.2	× 696 / 4329	0.5
Sum, rounded to a whole point						5

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	51,247	2428.0	− 2432	−4	× 692 / 4494	−0.6
4	51,248	2476.0	− 2473	3	× 778 / 4494	0.5
5	51,249	2519.5	− 2502	17.5	× 727 / 4494	2.8
6	51,250	2531.5	− 2531	0.5	× 746 / 4494	0.1
7	51,251	2560.9	− 2552	8.9	× 794 / 4494	1.6
8	51,252	2560.9	− 2567	−6.1	× 757 / 4494	−1
Sum, rounded to a whole point						3

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	51,033	2426.1	− 2432	−5.9	× 716 / 4507	−0.9
4	51,034	2480.1	− 2473	7.1	× 711 / 4507	1.1
5	51,035	2516.5	− 2502	14.5	× 800 / 4507	2.6
6	51,036	2534.3	− 2531	3.3	× 742 / 4507	0.5
7	51,037	2566.6	− 2552	14.6	× 741 / 4507	2.4
8	51,038	2569.8	− 2567	2.8	× 797 / 4507	0.5
Sum, rounded to a whole point						6

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. 4, 11, −2, 12, 18, 9, 9, 5, 3, 6 → 7.5
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 7 · 2016→2017: 13 · 2017→2018: 14 · 2018→2019: 6 · 2019→2021: 9 · 2021→2022: 0 · 2022→2023: 4 · 2023→2024: 2 · 2024→2025: 3 → average 6.4
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 6.4 × 2.66 = 17. Upper limit 24.5, lower limit −9.5.

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.