Dixieland 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	41,352	2365.5	− 2432	−66.5	× 40 / 205	−13
4	41,353	2382.5	− 2473	−90.5	× 29 / 205	−12.8
5	41,356	2469.9	− 2502	−32.1	× 26 / 205	−4.1
6	41,357	2496.4	− 2531	−34.6	× 43 / 205	−7.3
7	41,360	2511.1	− 2552	−40.9	× 29 / 205	−5.8
8	41,361	2542.7	− 2567	−24.3	× 38 / 205	−4.5
Sum, rounded to a whole point						−47

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	38,257	2400.4	− 2432	−31.6	× 23 / 172	−4.2
4	38,258	2409.8	− 2473	−63.2	× 39 / 172	−14.3
5	38,261	2497.8	− 2502	−4.2	× 24 / 172	−0.6
6	38,263	2489.8	− 2531	−41.2	× 26 / 172	−6.2
7	38,265	2539.7	− 2552	−12.3	× 38 / 172	−2.7
8	38,267	2555.7	− 2567	−11.3	× 22 / 172	−1.4
Sum, rounded to a whole point						−30

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	39,169	2368.9	− 2432	−63.1	× 21 / 163	−8.1
4	39,170	2437.1	− 2473	−35.9	× 27 / 163	−5.9
5	39,173	2459.7	− 2502	−42.3	× 37 / 163	−9.6
6	39,175	2515.6	− 2531	−15.4	× 18 / 163	−1.7
7	39,177	2535.5	− 2552	−16.5	× 27 / 163	−2.7
8	39,179	2534.1	− 2567	−32.9	× 33 / 163	−6.7
Sum, rounded to a whole point						−35

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	39,208	2428.5	− 2432	−3.5	× 38 / 182	−0.7
4	39,209	2422.4	− 2473	−50.6	× 25 / 182	−7
5	39,212	2485.0	− 2502	−17	× 30 / 182	−2.8
6	39,213	2503.6	− 2531	−27.4	× 37 / 182	−5.6
7	39,216	2530.1	− 2552	−21.9	× 24 / 182	−2.9
8	39,217	2549.7	− 2567	−17.3	× 28 / 182	−2.7
Sum, rounded to a whole point						−22

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	39,347	2397.5	− 2432	−34.5	× 31 / 185	−5.8
4	39,348	2448.0	− 2473	−25	× 37 / 185	−5
5	39,349	2459.8	− 2502	−42.2	× 27 / 185	−6.2
6	39,350	2505.2	− 2531	−25.8	× 29 / 185	−4
7	39,351	2518.9	− 2552	−33.1	× 38 / 185	−6.8
8	39,352	2521.6	− 2567	−45.4	× 23 / 185	−5.6
Sum, rounded to a whole point						−33

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	39,124	2345.9	− 2432	−86.1	× 44 / 207	−18.3
4	39,125	2421.1	− 2473	−51.9	× 27 / 207	−6.8
5	39,126	2452.1	− 2502	−49.9	× 31 / 207	−7.5
6	39,127	2482.0	− 2531	−49	× 37 / 207	−8.8
7	39,128	2500.4	− 2552	−51.6	× 38 / 207	−9.5
8	39,129	2516.4	− 2567	−50.6	× 30 / 207	−7.3
Sum, rounded to a whole point						−58

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	39,179	2338.0	− 2432	−94	× 40 / 214	−17.6
4	39,180	2363.3	− 2473	−109.7	× 45 / 214	−23.1
5	39,181	2504.3	− 2502	2.3	× 24 / 214	0.3
6	39,182	2480.0	− 2531	−51	× 32 / 214	−7.6
7	39,183	2517.4	− 2552	−34.6	× 37 / 214	−6
8	39,184	2476.4	− 2567	−90.6	× 36 / 214	−15.2
Sum, rounded to a whole point						−69

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	39,005	2366.2	− 2432	−65.8	× 39 / 207	−12.4
4	39,006	2405.8	− 2473	−67.2	× 35 / 207	−11.4
5	39,007	2439.6	− 2502	−62.4	× 44 / 207	−13.3
6	39,008	2542.3	− 2531	11.3	× 26 / 207	1.4
7	39,009	2518.6	− 2552	−33.4	× 28 / 207	−4.5
8	39,010	2539.3	− 2567	−27.7	× 35 / 207	−4.7
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	38,776	2404.8	− 2432	−27.2	× 25 / 195	−3.5
4	38,777	2408.1	− 2473	−64.9	× 40 / 195	−13.3
5	38,778	2467.0	− 2502	−35	× 37 / 195	−6.6
6	38,779	2495.9	− 2531	−35.1	× 41 / 195	−7.4
7	38,780	2533.8	− 2552	−18.2	× 26 / 195	−2.4
8	38,781	2519.3	− 2567	−47.7	× 26 / 195	−6.4
Sum, rounded to a whole point						−40

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −47, −30, −35, −22, −33, −58, −69, −45, −40 → −42.1
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 17 · 2016→2017: 5 · 2017→2018: 13 · 2018→2019: 11 · 2019→2022: 25 · 2022→2023: 11 · 2023→2024: 24 · 2024→2025: 5 → average 13.9
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 13.9 × 2.66 = 37. Upper limit −5.1, lower limit −79.1.

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.