Stewart 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	7,885	2424.3	− 2432	−7.7	× 45 / 322	−1.1
4	7,887	2437.6	− 2473	−35.4	× 52 / 322	−5.7
5	7,889	2486.1	− 2502	−15.9	× 59 / 322	−2.9
6	7,891	2504.4	− 2531	−26.6	× 57 / 322	−4.7
7	7,893	2507.5	− 2552	−44.5	× 52 / 322	−7.2
8	7,895	2543.3	− 2567	−23.7	× 57 / 322	−4.2
Sum, rounded to a whole point						−26

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	7,069	2398.5	− 2432	−33.5	× 43 / 316	−4.6
4	7,071	2451.2	− 2473	−21.8	× 51 / 316	−3.5
5	7,073	2482.1	− 2502	−19.9	× 53 / 316	−3.3
6	7,074	2517.8	− 2531	−13.2	× 63 / 316	−2.6
7	7,077	2514.1	− 2552	−37.9	× 56 / 316	−6.7
8	7,078	2527.3	− 2567	−39.7	× 50 / 316	−6.3
Sum, rounded to a whole point						−27

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	7,281	2398.3	− 2432	−33.7	× 45 / 298	−5.1
4	7,282	2416.2	− 2473	−56.8	× 40 / 298	−7.6
5	7,284	2472.7	− 2502	−29.3	× 50 / 298	−4.9
6	7,287	2485.9	− 2531	−45.1	× 53 / 298	−8
7	7,289	2533.7	− 2552	−18.3	× 62 / 298	−3.8
8	7,290	2542.3	− 2567	−24.7	× 48 / 298	−4
Sum, rounded to a whole point						−33

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	7,298	2392.1	− 2432	−39.9	× 56 / 309	−7.2
4	7,301	2441.6	− 2473	−31.4	× 47 / 309	−4.8
5	7,302	2387.7	− 2502	−114.3	× 56 / 309	−20.7
6	7,305	2492.9	− 2531	−38.1	× 54 / 309	−6.7
7	7,306	2517.9	− 2552	−34.1	× 45 / 309	−5
8	7,309	2561.3	− 2567	−5.7	× 51 / 309	−0.9
Sum, rounded to a whole point						−45

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	7,344	2395.3	− 2432	−36.7	× 59 / 315	−6.9
4	7,345	2421.8	− 2473	−51.2	× 53 / 315	−8.6
5	7,346	2455.5	− 2502	−46.5	× 50 / 315	−7.4
6	7,347	2458.4	− 2531	−72.6	× 51 / 315	−11.8
7	7,348	2515.3	− 2552	−36.7	× 58 / 315	−6.8
8	7,349	2541.9	− 2567	−25.1	× 44 / 315	−3.5
Sum, rounded to a whole point						−45

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	7,289	2377.0	− 2432	−55	× 36 / 252	−7.9
4	7,290	2452.3	− 2473	−20.7	× 48 / 252	−3.9
5	7,291	2456.9	− 2502	−45.1	× 34 / 252	−6.1
6	7,292	2509.7	− 2531	−21.3	× 52 / 252	−4.4
7	7,293	2499.1	− 2552	−52.9	× 42 / 252	−8.8
8	7,294	2538.7	− 2567	−28.3	× 40 / 252	−4.5
Sum, rounded to a whole point						−36

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	7,277	2401.6	− 2432	−30.4	× 38 / 256	−4.5
4	7,278	2417.3	− 2473	−55.7	× 38 / 256	−8.3
5	7,279	2528.4	− 2502	26.4	× 44 / 256	4.5
6	7,280	2516.2	− 2531	−14.8	× 34 / 256	−2
7	7,281	2547.8	− 2552	−4.2	× 56 / 256	−0.9
8	7,282	2512.1	− 2567	−54.9	× 46 / 256	−9.9
Sum, rounded to a whole point						−21

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	7,224	2401.7	− 2432	−30.3	× 37 / 254	−4.4
4	7,225	2462.5	− 2473	−10.5	× 40 / 254	−1.7
5	7,226	2489.3	− 2502	−12.7	× 39 / 254	−2
6	7,227	2517.3	− 2531	−13.7	× 47 / 254	−2.5
7	7,228	2531.9	− 2552	−20.1	× 36 / 254	−2.8
8	7,229	2579.1	− 2567	12.1	× 55 / 254	2.6
Sum, rounded to a whole point						−11

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	7,184	2393.1	− 2432	−38.9	× 38 / 231	−6.4
4	7,185	2446.1	− 2473	−26.9	× 38 / 231	−4.4
5	7,186	2512.8	− 2502	10.8	× 41 / 231	1.9
6	7,187	2460.9	− 2531	−70.1	× 36 / 231	−10.9
7	7,188	2577.1	− 2552	25.1	× 42 / 231	4.6
8	7,189	2557.9	− 2567	−9.1	× 36 / 231	−1.4
Sum, rounded to a whole point						−17

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −26, −27, −33, −45, −45, −36, −21, −11, −17 → −29
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 1 · 2016→2017: 6 · 2017→2018: 12 · 2018→2019: 0 · 2019→2022: 9 · 2022→2023: 15 · 2023→2024: 10 · 2024→2025: 6 → average 7.4
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 7.4 × 2.66 = 19.7. Upper limit −9.3, lower limit −48.7.

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.