Ivanhoe 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	101,741	2349.2	− 2432	−82.8	× 87 / 332	−21.7
4	101,744	2357.0	− 2473	−116	× 84 / 332	−29.3
5	101,745	2414.0	− 2502	−88	× 85 / 332	−22.5
6	101,748	2432.6	− 2531	−98.4	× 76 / 332	−22.5
Sum, rounded to a whole point						−96

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	94,452	2413.4	− 2432	−18.6	× 87 / 344	−4.7
4	94,453	2415.3	− 2473	−57.7	× 81 / 344	−13.6
5	94,455	2465.3	− 2502	−36.7	× 77 / 344	−8.2
6	94,457	2476.0	− 2531	−55	× 80 / 344	−12.8
7	94,460	2491.4	− 2552	−60.6	× 19 / 344	−3.3
Sum, rounded to a whole point						−43

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	97,227	2426.4	− 2432	−5.6	× 71 / 373	−1.1
4	97,228	2437.8	− 2473	−35.2	× 85 / 373	−8
5	97,231	2470.5	− 2502	−31.5	× 89 / 373	−7.5
6	97,232	2489.8	− 2531	−41.2	× 75 / 373	−8.3
7	97,235	2509.5	− 2552	−42.5	× 31 / 373	−3.5
8	97,237	2519.2	− 2567	−47.8	× 22 / 373	−2.8
Sum, rounded to a whole point						−31

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	97,405	2413.7	− 2432	−18.3	× 79 / 380	−3.8
4	97,408	2428.8	− 2473	−44.2	× 75 / 380	−8.7
5	97,409	2461.5	− 2502	−40.5	× 85 / 380	−9.1
6	97,412	2488.8	− 2531	−42.2	× 94 / 380	−10.4
7	97,413	2463.8	− 2552	−88.2	× 24 / 380	−5.6
8	97,416	2512.1	− 2567	−54.9	× 23 / 380	−3.3
Sum, rounded to a whole point						−41

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	98,055	2420.8	− 2432	−11.2	× 79 / 361	−2.5
4	98,056	2444.8	− 2473	−28.2	× 83 / 361	−6.5
5	98,057	2497.8	− 2502	−4.2	× 69 / 361	−0.8
6	98,058	2494.0	− 2531	−37	× 79 / 361	−8.1
7	98,059	2487.7	− 2552	−64.3	× 27 / 361	−4.8
8	98,060	2542.3	− 2567	−24.7	× 24 / 361	−1.6
Sum, rounded to a whole point						−24

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	95,924	2363.1	− 2432	−68.9	× 76 / 330	−15.9
4	95,925	2398.6	− 2473	−74.4	× 69 / 330	−15.6
5	95,926	2471.2	− 2502	−30.8	× 63 / 330	−5.9
6	95,927	2488.1	− 2531	−42.9	× 74 / 330	−9.6
7	95,928	2514.1	− 2552	−37.9	× 15 / 330	−1.7
8	95,929	2518.1	− 2567	−48.9	× 33 / 330	−4.9
Sum, rounded to a whole point						−54

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	98,257	2394.6	− 2432	−37.4	× 63 / 339	−7
4	98,258	2407.6	− 2473	−65.4	× 81 / 339	−15.6
5	98,259	2445.3	− 2502	−56.7	× 71 / 339	−11.9
6	98,260	2486.8	− 2531	−44.2	× 77 / 339	−10
7	98,261	2508.0	− 2552	−44	× 22 / 339	−2.9
8	98,262	2559.7	− 2567	−7.3	× 25 / 339	−0.5
Sum, rounded to a whole point						−48

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	98,096	2379.2	− 2432	−52.8	× 53 / 318	−8.8
4	98,097	2417.1	− 2473	−55.9	× 69 / 318	−12.1
5	98,098	2445.1	− 2502	−56.9	× 79 / 318	−14.1
6	98,099	2469.8	− 2531	−61.2	× 73 / 318	−14
7	98,100	2518.1	− 2552	−33.9	× 19 / 318	−2
8	98,101	2519.4	− 2567	−47.6	× 25 / 318	−3.7
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	98,003	2373.6	− 2432	−58.4	× 65 / 306	−12.4
4	98,004	2415.4	− 2473	−57.6	× 52 / 306	−9.8
5	98,005	2437.9	− 2502	−64.1	× 70 / 306	−14.7
6	98,006	2471.8	− 2531	−59.2	× 79 / 306	−15.3
7	98,007	2472.7	− 2552	−79.3	× 18 / 306	−4.7
8	98,008	2507.0	− 2567	−60	× 22 / 306	−4.3
Sum, rounded to a whole point						−61

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	97,708	2428.9	− 2432	−3.1	× 72 / 257	−0.9
4	97,709	2405.4	− 2473	−67.6	× 62 / 257	−16.3
5	97,710	2445.9	− 2502	−56.1	× 57 / 257	−12.4
6	97,711	2479.0	− 2531	−52	× 66 / 257	−13.4
Sum, rounded to a whole point						−43

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −96, −43, −31, −41, −24, −54, −48, −55, −61, −43 → −49.6
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 53 · 2016→2017: 12 · 2017→2018: 10 · 2018→2019: 17 · 2019→2021: 30 · 2021→2022: 6 · 2022→2023: 7 · 2023→2024: 6 · 2024→2025: 18 → average 17.7
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 17.7 × 2.66 = 47.1. Upper limit −2.5, lower limit −96.7.

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.