Pioneer 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	63,476	2369.7	− 2432	−62.3	× 85 / 391	−13.5
4	63,478	2408.2	− 2473	−64.8	× 70 / 391	−11.6
5	63,481	2440.5	− 2502	−61.5	× 71 / 391	−11.2
6	63,482	2481.8	− 2531	−49.2	× 62 / 391	−7.8
7	63,484	2492.0	− 2552	−60	× 45 / 391	−6.9
8	63,487	2515.7	− 2567	−51.3	× 58 / 391	−7.6
Sum, rounded to a whole point						−59

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	58,893	2362.8	− 2432	−69.2	× 76 / 364	−14.4
4	58,896	2425.9	− 2473	−47.1	× 85 / 364	−11
5	58,897	2476.9	− 2502	−25.1	× 58 / 364	−4
6	58,899	2488.3	− 2531	−42.7	× 59 / 364	−6.9
7	58,901	2488.5	− 2552	−63.5	× 52 / 364	−9.1
8	58,903	2527.1	− 2567	−39.9	× 34 / 364	−3.7
Sum, rounded to a whole point						−49

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	60,606	2362.1	− 2432	−69.9	× 66 / 389	−11.9
4	60,608	2422.5	− 2473	−50.5	× 75 / 389	−9.7
5	60,610	2473.4	− 2502	−28.6	× 86 / 389	−6.3
6	60,612	2453.7	− 2531	−77.3	× 58 / 389	−11.5
7	60,614	2506.7	− 2552	−45.3	× 65 / 389	−7.6
8	60,617	2497.6	− 2567	−69.4	× 39 / 389	−7
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	60,732	2403.2	− 2432	−28.8	× 69 / 392	−5.1
4	60,734	2439.2	− 2473	−33.8	× 61 / 392	−5.3
5	60,736	2456.3	− 2502	−45.7	× 61 / 392	−7.1
6	60,738	2510.1	− 2531	−20.9	× 81 / 392	−4.3
7	60,740	2507.3	− 2552	−44.7	× 62 / 392	−7.1
8	60,742	2555.6	− 2567	−11.4	× 58 / 392	−1.7
Sum, rounded to a whole point						−31

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	60,978	2416.9	− 2432	−15.1	× 69 / 351	−3
4	60,979	2477.5	− 2473	4.5	× 60 / 351	0.8
5	60,980	2485.7	− 2502	−16.3	× 46 / 351	−2.1
6	60,981	2504.6	− 2531	−26.4	× 58 / 351	−4.4
7	60,982	2580.1	− 2552	28.1	× 67 / 351	5.4
8	60,983	2562.3	− 2567	−4.7	× 51 / 351	−0.7
Sum, rounded to a whole point						−4

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	61,078	2402.3	− 2432	−29.7	× 74 / 379	−5.8
4	61,079	2431.9	− 2473	−41.1	× 73 / 379	−7.9
5	61,080	2462.1	− 2502	−39.9	× 71 / 379	−7.5
6	61,081	2491.1	− 2531	−39.9	× 63 / 379	−6.6
7	61,082	2604.2	− 2552	52.2	× 54 / 379	7.4
8	61,083	2552.0	− 2567	−15	× 44 / 379	−1.7
Sum, rounded to a whole point						−22

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	61,025	2395.3	− 2432	−36.7	× 63 / 389	−5.9
4	61,026	2445.7	− 2473	−27.3	× 72 / 389	−5.1
5	61,027	2474.1	− 2502	−27.9	× 74 / 389	−5.3
6	61,028	2483.5	− 2531	−47.5	× 66 / 389	−8.1
7	61,029	2595.5	− 2552	43.5	× 61 / 389	6.8
8	61,030	2601.6	− 2567	34.6	× 53 / 389	4.7
Sum, rounded to a whole point						−13

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	60,970	2397.0	− 2432	−35	× 62 / 401	−5.4
4	60,971	2432.7	− 2473	−40.3	× 68 / 401	−6.8
5	60,972	2498.9	− 2502	−3.1	× 75 / 401	−0.6
6	60,973	2502.7	− 2531	−28.3	× 76 / 401	−5.4
7	60,974	2591.3	− 2552	39.3	× 58 / 401	5.7
8	60,975	2584.3	− 2567	17.3	× 62 / 401	2.7
Sum, rounded to a whole point						−10

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	60,739	2393.5	− 2432	−38.5	× 51 / 378	−5.2
4	60,740	2455.7	− 2473	−17.3	× 61 / 378	−2.8
5	60,741	2493.2	− 2502	−8.8	× 73 / 378	−1.7
6	60,742	2524.4	− 2531	−6.6	× 79 / 378	−1.4
7	60,743	2608.1	− 2552	56.1	× 60 / 378	8.9
8	60,744	2581.1	− 2567	14.1	× 54 / 378	2
Sum, rounded to a whole point						0

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −59, −49, −54, −31, −4, −22, −13, −10, 0 → −26.9
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 10 · 2016→2017: 5 · 2017→2018: 23 · 2018→2019: 27 · 2019→2022: 18 · 2022→2023: 9 · 2023→2024: 3 · 2024→2025: 10 → average 13.1
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 13.1 × 2.66 = 34.8. Upper limit 7.9, lower limit −61.7.

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.