Rio Hondo Elementary: english

The shaded band is this school'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	23,301	2365.6	− 2432	−66.4	× 83 / 597	−9.2
4	23,303	2447.6	− 2473	−25.4	× 85 / 597	−3.6
5	23,305	2452.2	− 2502	−49.8	× 77 / 597	−6.4
6	23,307	2491.4	− 2531	−39.6	× 91 / 597	−6
7	23,309	2532.9	− 2552	−19.1	× 118 / 597	−3.8
8	23,311	2570.0	− 2567	3	× 143 / 597	0.7
Sum, rounded to a whole point						−28

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	21,892	2416.8	− 2432	−15.2	× 64 / 568	−1.7
4	21,893	2408.7	− 2473	−64.3	× 79 / 568	−8.9
5	21,895	2503.2	− 2502	1.2	× 83 / 568	0.2
6	21,897	2494.9	− 2531	−36.1	× 75 / 568	−4.8
7	21,899	2557.0	− 2552	5	× 147 / 568	1.3
8	21,902	2550.7	− 2567	−16.3	× 120 / 568	−3.4
Sum, rounded to a whole point						−17

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	22,308	2391.3	− 2432	−40.7	× 66 / 559	−4.8
4	22,311	2469.0	− 2473	−4	× 64 / 559	−0.5
5	22,313	2451.0	− 2502	−51	× 88 / 559	−8
6	22,315	2523.4	− 2531	−7.6	× 80 / 559	−1.1
7	22,316	2551.3	− 2552	−0.7	× 117 / 559	−0.1
8	22,319	2562.7	− 2567	−4.3	× 144 / 559	−1.1
Sum, rounded to a whole point						−16

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	22,295	2420.7	− 2432	−11.3	× 67 / 530	−1.4
4	22,297	2444.6	− 2473	−28.4	× 70 / 530	−3.8
5	22,299	2500.4	− 2502	−1.6	× 67 / 530	−0.2
6	22,301	2475.8	− 2531	−55.2	× 89 / 530	−9.3
7	22,303	2564.2	− 2552	12.2	× 113 / 530	2.6
8	22,305	2563.0	− 2567	−4	× 124 / 530	−0.9
Sum, rounded to a whole point						−13

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	22,469	2454.3	− 2432	22.3	× 60 / 533	2.5
4	22,470	2472.9	− 2473	−0.1	× 73 / 533	0
5	22,471	2485.0	− 2502	−17	× 74 / 533	−2.4
6	22,472	2502.6	− 2531	−28.4	× 72 / 533	−3.8
7	22,473	2556.3	− 2552	4.3	× 136 / 533	1.1
8	22,474	2566.2	− 2567	−0.8	× 118 / 533	−0.2
Sum, rounded to a whole point						−3

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	22,436	2381.6	− 2432	−50.4	× 66 / 521	−6.4
4	22,437	2423.0	− 2473	−50	× 72 / 521	−6.9
5	22,438	2468.5	− 2502	−33.5	× 69 / 521	−4.4
6	22,439	2507.2	− 2531	−23.8	× 69 / 521	−3.2
7	22,440	2550.6	− 2552	−1.4	× 126 / 521	−0.3
8	22,441	2566.1	− 2567	−0.9	× 119 / 521	−0.2
Sum, rounded to a whole point						−21

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	22,411	2381.9	− 2432	−50.1	× 50 / 514	−4.9
4	22,412	2431.3	− 2473	−41.7	× 71 / 514	−5.8
5	22,413	2463.8	− 2502	−38.2	× 71 / 514	−5.3
6	22,414	2476.3	− 2531	−54.7	× 72 / 514	−7.7
7	22,415	2538.3	− 2552	−13.7	× 124 / 514	−3.3
8	22,416	2569.1	− 2567	2.1	× 126 / 514	0.5
Sum, rounded to a whole point						−26

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	22,261	2367.7	− 2432	−64.3	× 59 / 502	−7.6
4	22,262	2407.0	− 2473	−66	× 62 / 502	−8.2
5	22,263	2463.9	− 2502	−38.1	× 74 / 502	−5.6
6	22,264	2483.8	− 2531	−47.2	× 65 / 502	−6.1
7	22,265	2528.6	− 2552	−23.4	× 112 / 502	−5.2
8	22,266	2548.1	− 2567	−18.9	× 130 / 502	−4.9
Sum, rounded to a whole point						−38

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	22,172	2370.4	− 2432	−61.6	× 48 / 499	−5.9
4	22,173	2430.0	− 2473	−43	× 66 / 499	−5.7
5	22,174	2451.1	− 2502	−50.9	× 69 / 499	−7
6	22,175	2489.8	− 2531	−41.2	× 79 / 499	−6.5
7	22,176	2549.2	− 2552	−2.8	× 126 / 499	−0.7
8	22,177	2553.7	− 2567	−13.3	× 111 / 499	−3
Sum, rounded to a whole point						−29

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −28, −17, −16, −13, −3, −21, −26, −38, −29 → −21.2
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 11 · 2016→2017: 1 · 2017→2018: 3 · 2018→2019: 10 · 2019→2022: 18 · 2022→2023: 5 · 2023→2024: 12 · 2024→2025: 9 → average 8.6
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 8.6 × 2.66 = 22.9. Upper limit 1.7, lower limit −44.1.

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. From 2014–15, 2015–16, 2016–17, 2017–18, 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25, 2025–26.