Dorris Place 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	30,109	2425.8	− 2432	−6.2	× 41 / 167	−1.5
4	30,112	2473.9	− 2473	0.9	× 44 / 167	0.2
5	30,113	2516.0	− 2502	14	× 52 / 167	4.4
6	30,116	2524.9	− 2531	−6.1	× 30 / 167	−1.1
Sum, rounded to a whole point						2

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	28,330	2403.7	− 2432	−28.3	× 49 / 177	−7.8
4	28,332	2473.7	− 2473	0.7	× 42 / 177	0.2
5	28,333	2497.0	− 2502	−5	× 38 / 177	−1.1
6	28,336	2541.3	− 2531	10.3	× 48 / 177	2.8
Sum, rounded to a whole point						−6

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	28,896	2429.4	− 2432	−2.6	× 46 / 163	−0.7
4	28,898	2452.2	− 2473	−20.8	× 47 / 163	−6
5	28,900	2512.0	− 2502	10	× 40 / 163	2.5
6	28,902	2506.2	− 2531	−24.8	× 30 / 163	−4.6
Sum, rounded to a whole point						−9

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	28,945	2487.5	− 2432	55.5	× 40 / 168	13.2
4	28,947	2472.0	− 2473	−1	× 46 / 168	−0.3
5	28,949	2518.3	− 2502	16.3	× 48 / 168	4.7
6	28,951	2510.3	− 2531	−20.7	× 34 / 168	−4.2
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	29,121	2441.1	− 2432	9.1	× 38 / 165	2.1
4	29,122	2522.7	− 2473	49.7	× 38 / 165	11.4
5	29,123	2504.2	− 2502	2.2	× 45 / 165	0.6
6	29,124	2554.6	− 2531	23.6	× 44 / 165	6.3
Sum, rounded to a whole point						20

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	29,156	2406.3	− 2432	−25.7	× 22 / 123	−4.6
4	29,157	2462.5	− 2473	−10.5	× 38 / 123	−3.2
5	29,158	2504.9	− 2502	2.9	× 36 / 123	0.8
6	29,159	2520.2	− 2531	−10.8	× 27 / 123	−2.4
Sum, rounded to a whole point						−9

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	29,215	2403.5	− 2432	−28.5	× 26 / 105	−7.1
4	29,216	2458.6	− 2473	−14.4	× 25 / 105	−3.4
5	29,217	2535.4	− 2502	33.4	× 30 / 105	9.5
6	29,218	2538.2	− 2531	7.2	× 24 / 105	1.6
Sum, rounded to a whole point						1

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	29,081	2433.9	− 2432	1.9	× 30 / 101	0.6
4	29,082	2509.3	− 2473	36.3	× 24 / 101	8.6
5	29,083	2493.5	− 2502	−8.5	× 24 / 101	−2
6	29,084	2570.1	− 2531	39.1	× 23 / 101	8.9
Sum, rounded to a whole point						16

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	28,944	2419.9	− 2432	−12.1	× 44 / 119	−4.5
4	28,945	2519.0	− 2473	46	× 32 / 119	12.4
5	28,946	2526.5	− 2502	24.5	× 24 / 119	4.9
6	28,947	2567.7	− 2531	36.7	× 19 / 119	5.9
Sum, rounded to a whole point						19

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. 2, −6, −9, 13, 20, −9, 1, 16, 19 → 5.2
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 8 · 2016→2017: 3 · 2017→2018: 22 · 2018→2019: 7 · 2019→2022: 29 · 2022→2023: 10 · 2023→2024: 15 · 2024→2025: 3 → average 12.1
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 12.1 × 2.66 = 32.2. Upper limit 37.4, lower limit −27.

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.