Jacoby Creek 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	13,760	2495.7	− 2432	63.7	× 50 / 285	11.2
4	13,763	2511.2	− 2473	38.2	× 44 / 285	5.9
5	13,764	2541.4	− 2502	39.4	× 50 / 285	6.9
6	13,767	2554.3	− 2531	23.3	× 53 / 285	4.3
7	13,768	2601.4	− 2552	49.4	× 45 / 285	7.8
8	13,771	2605.5	− 2567	38.5	× 43 / 285	5.8
Sum, rounded to a whole point						42

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	12,791	2495.2	− 2432	63.2	× 56 / 296	12
4	12,793	2541.7	− 2473	68.7	× 50 / 296	11.6
5	12,795	2563.2	− 2502	61.2	× 48 / 296	9.9
6	12,796	2538.9	− 2531	7.9	× 49 / 296	1.3
7	12,798	2615.8	− 2552	63.8	× 51 / 296	11
8	12,801	2622.6	− 2567	55.6	× 42 / 296	7.9
Sum, rounded to a whole point						54

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	13,126	2501.7	− 2432	69.7	× 47 / 301	10.9
4	13,127	2514.2	− 2473	41.2	× 53 / 301	7.3
5	13,129	2570.5	− 2502	68.5	× 54 / 301	12.3
6	13,131	2560.9	− 2531	29.9	× 48 / 301	4.8
7	13,133	2566.8	− 2552	14.8	× 50 / 301	2.5
8	13,135	2610.4	− 2567	43.4	× 49 / 301	7.1
Sum, rounded to a whole point						45

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	13,140	2514.1	− 2432	82.1	× 44 / 300	12
4	13,141	2536.3	− 2473	63.3	× 51 / 300	10.8
5	13,144	2559.5	− 2502	57.5	× 54 / 300	10.4
6	13,145	2603.8	− 2531	72.8	× 53 / 300	12.9
7	13,148	2613.2	− 2552	61.2	× 51 / 300	10.4
8	13,149	2624.4	− 2567	57.4	× 47 / 300	9
Sum, rounded to a whole point						65

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	13,262	2491.4	− 2432	59.4	× 46 / 303	9
4	13,263	2520.4	− 2473	47.4	× 48 / 303	7.5
5	13,264	2563.1	− 2502	61.1	× 54 / 303	10.9
6	13,265	2579.1	− 2531	48.1	× 53 / 303	8.4
7	13,266	2623.6	− 2552	71.6	× 55 / 303	13
8	13,267	2628.4	− 2567	61.4	× 47 / 303	9.5
Sum, rounded to a whole point						58

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	13,098	2462.3	− 2432	30.3	× 43 / 283	4.6
4	13,099	2542.5	− 2473	69.5	× 51 / 283	12.5
5	13,100	2534.5	− 2502	32.5	× 47 / 283	5.4
6	13,101	2550.6	− 2531	19.6	× 44 / 283	3
7	13,102	2598.6	− 2552	46.6	× 45 / 283	7.4
8	13,103	2586.2	− 2567	19.2	× 53 / 283	3.6
Sum, rounded to a whole point						37

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	13,287	2463.9	− 2432	31.9	× 48 / 289	5.3
4	13,288	2541.2	− 2473	68.2	× 43 / 289	10.1
5	13,289	2584.3	− 2502	82.3	× 56 / 289	15.9
6	13,290	2574.5	− 2531	43.5	× 51 / 289	7.7
7	13,291	2570.0	− 2552	18	× 48 / 289	3
8	13,292	2642.9	− 2567	75.9	× 43 / 289	11.3
Sum, rounded to a whole point						53

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	13,264	2469.2	− 2432	37.2	× 50 / 291	6.4
4	13,265	2533.1	− 2473	60.1	× 52 / 291	10.7
5	13,266	2575.8	− 2502	73.8	× 45 / 291	11.4
6	13,267	2589.6	− 2531	58.6	× 52 / 291	10.5
7	13,268	2611.4	− 2552	59.4	× 46 / 291	9.4
8	13,269	2607.3	− 2567	40.3	× 46 / 291	6.4
Sum, rounded to a whole point						55

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	13,225	2451.7	− 2432	19.7	× 47 / 297	3.1
4	13,226	2527.8	− 2473	54.8	× 49 / 297	9
5	13,227	2560.9	− 2502	58.9	× 55 / 297	10.9
6	13,228	2590.0	− 2531	59	× 45 / 297	8.9
7	13,229	2617.0	− 2552	65	× 52 / 297	11.4
8	13,230	2606.7	− 2567	39.7	× 49 / 297	6.5
Sum, rounded to a whole point						50

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	13,191	2470.8	− 2432	38.8	× 49 / 293	6.5
4	13,192	2535.3	− 2473	62.3	× 44 / 293	9.4
5	13,193	2551.6	− 2502	49.6	× 50 / 293	8.5
6	13,194	2571.3	− 2531	40.3	× 51 / 293	7
7	13,195	2626.6	− 2552	74.6	× 47 / 293	12
8	13,196	2637.2	− 2567	70.2	× 52 / 293	12.5
Sum, rounded to a whole point						56

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. 42, 54, 45, 65, 58, 37, 53, 55, 50, 56 → 51.5
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: 9 · 2017→2018: 20 · 2018→2019: 7 · 2019→2021: 21 · 2021→2022: 16 · 2022→2023: 2 · 2023→2024: 5 · 2024→2025: 6 → average 10.9
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 10.9 × 2.66 = 29. Upper limit 80.5, lower limit 22.5.

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.

Schools in Jacoby Creek Elementary

Jacoby Creek