Chicago Park 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	47,311	2371.5	− 2432	−60.5	× 22 / 119	−11.2
4	47,312	2445.9	− 2473	−27.1	× 22 / 119	−5
5	47,315	2492.3	− 2502	−9.7	× 24 / 119	−2
6	47,316	2507.4	− 2531	−23.6	× 22 / 119	−4.4
7	47,319	2516.2	− 2552	−35.8	× 11 / 119	−3.3
8	47,320	2530.9	− 2567	−36.1	× 18 / 119	−5.5
Sum, rounded to a whole point						−31

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	43,983	2412.5	− 2432	−19.5	× 18 / 115	−3.1
4	43,986	2448.2	− 2473	−24.8	× 20 / 115	−4.3
5	43,988	2467.9	− 2502	−34.1	× 23 / 115	−6.8
6	43,990	2522.6	− 2531	−8.4	× 23 / 115	−1.7
7	43,992	2577.8	− 2552	25.8	× 19 / 115	4.3
8	43,994	2571.3	− 2567	4.3	× 12 / 115	0.4
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	45,053	2425.5	− 2432	−6.5	× 22 / 120	−1.2
4	45,054	2438.7	− 2473	−34.3	× 17 / 120	−4.9
5	45,056	2501.3	− 2502	−0.7	× 23 / 120	−0.1
6	45,059	2508.2	− 2531	−22.8	× 19 / 120	−3.6
7	45,060	2571.8	− 2552	19.8	× 21 / 120	3.5
8	45,062	2590.1	− 2567	23.1	× 18 / 120	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	45,068	2409.8	− 2432	−22.2	× 16 / 124	−2.9
4	45,069	2462.5	− 2473	−10.5	× 19 / 124	−1.6
5	45,072	2536.0	− 2502	34	× 16 / 124	4.4
6	45,073	2514.5	− 2531	−16.5	× 27 / 124	−3.6
7	45,076	2520.5	− 2552	−31.5	× 21 / 124	−5.3
8	45,077	2573.0	− 2567	6	× 25 / 124	1.2
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	45,193	2412.2	− 2432	−19.8	× 18 / 122	−2.9
4	45,194	2467.9	− 2473	−5.1	× 21 / 122	−0.9
5	45,195	2463.4	− 2502	−38.6	× 23 / 122	−7.3
6	45,196	2532.9	− 2531	1.9	× 18 / 122	0.3
7	45,197	2578.2	− 2552	26.2	× 25 / 122	5.4
8	45,198	2583.4	− 2567	16.4	× 17 / 122	2.3
Sum, rounded to a whole point						−3

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	43,891	2393.1	− 2432	−38.9	× 14 / 95	−5.7
4	43,892	2467.3	− 2473	−5.7	× 19 / 95	−1.1
5	43,893	2550.5	− 2502	48.5	× 12 / 95	6.1
6	43,894	2553.8	− 2531	22.8	× 17 / 95	4.1
7	43,895	2537.6	− 2552	−14.4	× 18 / 95	−2.7
8	43,896	2592.2	− 2567	25.2	× 15 / 95	4
Sum, rounded to a whole point						5

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	44,918	2418.7	− 2432	−13.3	× 16 / 91	−2.3
4	44,919	2457.0	− 2473	−16	× 13 / 91	−2.3
5	44,920	2516.2	− 2502	14.2	× 18 / 91	2.8
6	44,921	2473.5	− 2531	−57.5	× 11 / 91	−7
7	44,922	2577.3	− 2552	25.3	× 16 / 91	4.4
8	44,923	2518.8	− 2567	−48.2	× 17 / 91	−9
Sum, rounded to a whole point						−13

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	44,892	2370.5	− 2432	−61.5	× 20 / 98	−12.6
4	44,893	2435.8	− 2473	−37.2	× 17 / 98	−6.5
5	44,894	2507.2	− 2502	5.2	× 16 / 98	0.8
6	44,895	2539.2	− 2531	8.2	× 19 / 98	1.6
7	44,896	2526.4	− 2552	−25.6	× 12 / 98	−3.1
8	44,897	2600.4	− 2567	33.4	× 14 / 98	4.8
Sum, rounded to a whole point						−15

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	44,737	2444.6	− 2432	12.6	× 18 / 75	3
4	44,738	2412.0	− 2473	−61	× 17 / 75	−13.8
5	44,739	2506.9	− 2502	4.9	× 17 / 75	1.1
6	44,740	2535.5	− 2531	4.5	× 12 / 75	0.7
7	44,741	2576.5	− 2552	24.5	× 11 / 75	3.6
Sum, rounded to a whole point						−5

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	44,477	2474.1	− 2432	42.1	× 19 / 92	8.7
4	44,478	2504.4	− 2473	31.4	× 17 / 92	5.8
5	44,479	2496.6	− 2502	−5.4	× 18 / 92	−1.1
6	44,480	2563.1	− 2531	32.1	× 16 / 92	5.6
7	44,481	2572.5	− 2552	20.5	× 11 / 92	2.5
8	44,482	2574.8	− 2567	7.8	× 11 / 92	0.9
Sum, rounded to a whole point						22

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −31, −11, −3, −8, −3, 5, −13, −15, −5, 22 → −6.2
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 20 · 2016→2017: 8 · 2017→2018: 5 · 2018→2019: 5 · 2019→2021: 8 · 2021→2022: 18 · 2022→2023: 2 · 2023→2024: 10 · 2024→2025: 27 → average 11.4
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 11.4 × 2.66 = 30.3. Upper limit 24.1, lower limit −36.5.

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 Chicago Park Elementary

Chicago Park Elementary