Avalon Gardens 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	29,405	2378.4	− 2432	−53.6	× 23 / 117	−10.5
4	29,408	2387.6	− 2473	−85.4	× 35 / 117	−25.5
5	29,409	2437.8	− 2502	−64.2	× 32 / 117	−17.6
6	29,412	2512.3	− 2531	−18.7	× 27 / 117	−4.3
Sum, rounded to a whole point						−58

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	27,627	2429.2	− 2432	−2.8	× 25 / 105	−0.7
4	27,630	2439.9	− 2473	−33.1	× 19 / 105	−6
5	27,632	2465.5	− 2502	−36.5	× 34 / 105	−11.8
6	27,633	2514.3	− 2531	−16.7	× 27 / 105	−4.3
Sum, rounded to a whole point						−23

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	28,199	2401.1	− 2432	−30.9	× 34 / 110	−9.6
4	28,201	2426.0	− 2473	−47	× 29 / 110	−12.4
5	28,202	2454.0	− 2502	−48	× 23 / 110	−10
6	28,205	2467.1	− 2531	−63.9	× 24 / 110	−13.9
Sum, rounded to a whole point						−46

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	28,249	2422.1	− 2432	−9.9	× 35 / 107	−3.2
4	28,251	2449.8	− 2473	−23.2	× 32 / 107	−6.9
5	28,254	2448.1	− 2502	−53.9	× 24 / 107	−12.1
6	28,256	2485.9	− 2531	−45.1	× 16 / 107	−6.7
Sum, rounded to a whole point						−29

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	28,425	2410.9	− 2432	−21.1	× 25 / 104	−5.1
4	28,426	2429.5	− 2473	−43.5	× 31 / 104	−13
5	28,427	2458.1	− 2502	−43.9	× 29 / 104	−12.2
6	28,428	2460.3	− 2531	−70.7	× 19 / 104	−12.9
Sum, rounded to a whole point						−43

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	28,460	2338.6	− 2432	−93.4	× 30 / 92	−30.5
4	28,461	2395.3	− 2473	−77.7	× 24 / 92	−20.3
5	28,462	2406.3	− 2502	−95.7	× 18 / 92	−18.7
6	28,463	2462.4	− 2531	−68.6	× 20 / 92	−14.9
Sum, rounded to a whole point						−84

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	28,521	2351.2	− 2432	−80.8	× 15 / 77	−15.7
4	28,522	2406.5	− 2473	−66.5	× 26 / 77	−22.5
5	28,523	2484.0	− 2502	−18	× 23 / 77	−5.4
6	28,524	2454.9	− 2531	−76.1	× 13 / 77	−12.8
Sum, rounded to a whole point						−56

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	28,387	2362.2	− 2432	−69.8	× 20 / 74	−18.9
4	28,388	2474.6	− 2473	1.6	× 12 / 74	0.3
5	28,389	2426.0	− 2502	−76	× 23 / 74	−23.6
6	28,390	2519.0	− 2531	−12	× 19 / 74	−3.1
Sum, rounded to a whole point						−45

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	28,250	2368.6	− 2432	−63.4	× 19 / 78	−15.4
4	28,251	2419.7	− 2473	−53.3	× 21 / 78	−14.4
5	28,252	2430.8	− 2502	−71.2	× 17 / 78	−15.5
6	28,253	2448.3	− 2531	−82.7	× 21 / 78	−22.3
Sum, rounded to a whole point						−68

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −58, −23, −46, −29, −43, −84, −56, −45, −68 → −50.2
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 35 · 2016→2017: 23 · 2017→2018: 17 · 2018→2019: 14 · 2019→2022: 41 · 2022→2023: 28 · 2023→2024: 11 · 2024→2025: 23 → average 24
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 24 × 2.66 = 63.8. Upper limit 13.6, lower limit −114.

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.