Barton 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	67,957	2363.3	− 2432	−68.7	× 68 / 267	−17.5
4	67,958	2370.8	− 2473	−102.2	× 70 / 267	−26.8
5	67,961	2435.7	− 2502	−66.3	× 66 / 267	−16.4
6	67,962	2440.1	− 2531	−90.9	× 63 / 267	−21.4
Sum, rounded to a whole point						−82

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	62,966	2358.0	− 2432	−74	× 71 / 255	−20.6
4	62,967	2409.6	− 2473	−63.4	× 66 / 255	−16.4
5	62,970	2439.5	− 2502	−62.5	× 59 / 255	−14.5
6	62,971	2463.2	− 2531	−67.8	× 59 / 255	−15.7
Sum, rounded to a whole point						−67

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	64,753	2370.6	− 2432	−61.4	× 72 / 255	−17.3
4	64,755	2417.3	− 2473	−55.7	× 67 / 255	−14.6
5	64,758	2474.9	− 2502	−27.1	× 67 / 255	−7.1
6	64,759	2454.1	− 2531	−76.9	× 49 / 255	−14.8
Sum, rounded to a whole point						−54

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	64,843	2376.3	− 2432	−55.7	× 56 / 241	−12.9
4	64,845	2427.6	− 2473	−45.4	× 62 / 241	−11.7
5	64,847	2463.7	− 2502	−38.3	× 63 / 241	−10
6	64,849	2451.9	− 2531	−79.1	× 60 / 241	−19.7
Sum, rounded to a whole point						−54

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	65,208	2373.5	− 2432	−58.5	× 57 / 224	−14.9
4	65,209	2416.0	− 2473	−57	× 52 / 224	−13.2
5	65,210	2442.0	− 2502	−60	× 60 / 224	−16.1
6	65,211	2509.8	− 2531	−21.2	× 55 / 224	−5.2
Sum, rounded to a whole point						−49

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	65,299	2348.9	− 2432	−83.1	× 63 / 286	−18.3
4	65,300	2364.0	− 2473	−109	× 72 / 286	−27.4
5	65,301	2413.6	− 2502	−88.4	× 81 / 286	−25
6	65,302	2449.7	− 2531	−81.3	× 70 / 286	−19.9
Sum, rounded to a whole point						−91

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	65,304	2333.1	− 2432	−98.9	× 78 / 278	−27.7
4	65,305	2374.2	− 2473	−98.8	× 60 / 278	−21.3
5	65,306	2371.1	− 2502	−130.9	× 66 / 278	−31.1
6	65,307	2446.5	− 2531	−84.5	× 74 / 278	−22.5
Sum, rounded to a whole point						−103

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	65,272	2364.0	− 2432	−68	× 64 / 256	−17
4	65,273	2360.4	− 2473	−112.6	× 64 / 256	−28.2
5	65,274	2394.7	− 2502	−107.3	× 59 / 256	−24.7
6	65,275	2440.0	− 2531	−91	× 69 / 256	−24.5
Sum, rounded to a whole point						−94

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	65,032	2346.1	− 2432	−85.9	× 66 / 237	−23.9
4	65,033	2393.4	− 2473	−79.6	× 57 / 237	−19.1
5	65,034	2416.0	− 2502	−86	× 60 / 237	−21.8
6	65,035	2470.7	− 2531	−60.3	× 54 / 237	−13.7
Sum, rounded to a whole point						−79

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −82, −67, −54, −54, −49, −91, −103, −94, −79 → −74.8
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 15 · 2016→2017: 13 · 2017→2018: 0 · 2018→2019: 5 · 2019→2022: 42 · 2022→2023: 12 · 2023→2024: 9 · 2024→2025: 15 → 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 −37.8, lower limit −111.8.

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.