Rockford 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	100,974	2411.8	− 2432	−20.2	× 47 / 266	−3.6
4	100,975	2424.0	− 2473	−49	× 44 / 266	−8.1
5	100,978	2460.8	− 2502	−41.2	× 40 / 266	−6.2
6	100,979	2460.7	− 2531	−70.3	× 48 / 266	−12.7
7	100,982	2520.0	− 2552	−32	× 39 / 266	−4.7
8	100,983	2549.6	− 2567	−17.4	× 48 / 266	−3.1
Sum, rounded to a whole point						−38

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,680	2415.3	− 2432	−16.7	× 41 / 243	−2.8
4	93,682	2441.1	− 2473	−31.9	× 47 / 243	−6.2
5	93,685	2470.8	− 2502	−31.2	× 39 / 243	−5
6	93,686	2485.8	− 2531	−45.2	× 41 / 243	−7.6
7	93,689	2482.3	− 2552	−69.7	× 36 / 243	−10.3
8	93,690	2558.8	− 2567	−8.2	× 39 / 243	−1.3
Sum, rounded to a whole point						−33

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	96,444	2382.5	− 2432	−49.5	× 40 / 240	−8.3
4	96,447	2423.3	− 2473	−49.7	× 35 / 240	−7.2
5	96,449	2476.7	− 2502	−25.3	× 49 / 240	−5.2
6	96,450	2483.0	− 2531	−48	× 41 / 240	−8.2
7	96,452	2532.0	− 2552	−20	× 38 / 240	−3.2
8	96,455	2538.0	− 2567	−29	× 37 / 240	−4.5
Sum, rounded to a whole point						−37

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	96,630	2412.6	− 2432	−19.4	× 43 / 246	−3.4
4	96,632	2465.9	− 2473	−7.1	× 38 / 246	−1.1
5	96,634	2489.8	− 2502	−12.2	× 38 / 246	−1.9
6	96,636	2503.9	− 2531	−27.1	× 48 / 246	−5.3
7	96,638	2499.7	− 2552	−52.3	× 38 / 246	−8.1
8	96,640	2547.3	− 2567	−19.7	× 41 / 246	−3.3
Sum, rounded to a whole point						−23

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	97,299	2403.9	− 2432	−28.1	× 40 / 233	−4.8
4	97,300	2469.6	− 2473	−3.4	× 39 / 233	−0.6
5	97,301	2493.6	− 2502	−8.4	× 38 / 233	−1.4
6	97,302	2518.2	− 2531	−12.8	× 33 / 233	−1.8
7	97,303	2542.6	− 2552	−9.4	× 45 / 233	−1.8
8	97,304	2516.9	− 2567	−50.1	× 38 / 233	−8.2
Sum, rounded to a whole point						−19

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	97,475	2406.8	− 2432	−25.2	× 29 / 211	−3.5
4	97,476	2448.5	− 2473	−24.5	× 44 / 211	−5.1
5	97,477	2477.2	− 2502	−24.8	× 31 / 211	−3.6
6	97,478	2512.3	− 2531	−18.7	× 39 / 211	−3.5
7	97,479	2558.2	− 2552	6.2	× 35 / 211	1
8	97,480	2584.6	− 2567	17.6	× 33 / 211	2.8
Sum, rounded to a whole point						−12

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	97,322	2372.2	− 2432	−59.8	× 27 / 198	−8.2
4	97,323	2440.9	− 2473	−32.1	× 26 / 198	−4.2
5	97,324	2484.8	− 2502	−17.2	× 41 / 198	−3.6
6	97,325	2515.1	− 2531	−15.9	× 33 / 198	−2.7
7	97,326	2541.4	− 2552	−10.6	× 36 / 198	−1.9
8	97,327	2583.8	− 2567	16.8	× 35 / 198	3
Sum, rounded to a whole point						−18

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	97,215	2404.5	− 2432	−27.5	× 30 / 192	−4.3
4	97,216	2429.8	− 2473	−43.2	× 24 / 192	−5.4
5	97,217	2459.7	− 2502	−42.3	× 31 / 192	−6.8
6	97,218	2486.3	− 2531	−44.7	× 41 / 192	−9.5
7	97,219	2544.1	− 2552	−7.9	× 33 / 192	−1.4
8	97,220	2562.4	− 2567	−4.6	× 33 / 192	−0.8
Sum, rounded to a whole point						−28

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	96,934	2388.3	− 2432	−43.7	× 31 / 198	−6.8
4	96,935	2442.8	− 2473	−30.2	× 36 / 198	−5.5
5	96,936	2455.3	− 2502	−46.7	× 27 / 198	−6.4
6	96,937	2519.2	− 2531	−11.8	× 32 / 198	−1.9
7	96,938	2533.6	− 2552	−18.4	× 38 / 198	−3.5
8	96,939	2570.3	− 2567	3.3	× 34 / 198	0.6
Sum, rounded to a whole point						−24

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	96,564	2365.1	− 2432	−66.9	× 39 / 213	−12.2
4	96,565	2396.8	− 2473	−76.2	× 34 / 213	−12.2
5	96,566	2462.1	− 2502	−39.9	× 39 / 213	−7.3
6	96,567	2501.4	− 2531	−29.6	× 30 / 213	−4.2
7	96,568	2566.2	− 2552	14.2	× 32 / 213	2.1
8	96,569	2573.8	− 2567	6.8	× 39 / 213	1.2
Sum, rounded to a whole point						−33

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −38, −33, −37, −23, −19, −12, −18, −28, −24, −33 → −26.5
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 5 · 2016→2017: 4 · 2017→2018: 14 · 2018→2019: 4 · 2019→2022: 7 · 2022→2023: 6 · 2023→2024: 10 · 2024→2025: 4 · 2025→2026: 9 → average 7
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 7 × 2.66 = 18.6. Upper limit −7.9, lower limit −45.1.

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 Rockford Elementary

K–8 schools

Rockford Elementary