Pioneer: english · Schoolio

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	16,627	2353.2	− 2432	−78.8	× 100 / 593	−13.3
4	16,630	2406.3	− 2473	−66.7	× 108 / 593	−12.1
5	16,631	2443.2	− 2502	−58.8	× 99 / 593	−9.8
6	16,634	2500.4	− 2531	−30.6	× 113 / 593	−5.8
7	16,635	2496.5	− 2552	−55.5	× 88 / 593	−8.2
8	16,638	2530.1	− 2567	−36.9	× 85 / 593	−5.3
Sum, rounded to a whole point						−55

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	15,649	2381.9	− 2432	−50.1	× 106 / 625	−8.5
4	15,651	2404.5	− 2473	−68.5	× 105 / 625	−11.5
5	15,652	2470.5	− 2502	−31.5	× 111 / 625	−5.6
6	15,654	2512.2	− 2531	−18.8	× 114 / 625	−3.4
7	15,657	2515.0	− 2552	−37	× 104 / 625	−6.2
8	15,658	2521.3	− 2567	−45.7	× 85 / 625	−6.2
Sum, rounded to a whole point						−41

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	15,969	2380.5	− 2432	−51.5	× 104 / 657	−8.2
4	15,972	2428.0	− 2473	−45	× 101 / 657	−6.9
5	15,973	2431.6	− 2502	−70.4	× 101 / 657	−10.8
6	15,976	2502.6	− 2531	−28.4	× 121 / 657	−5.2
7	15,977	2523.6	− 2552	−28.4	× 119 / 657	−5.1
8	15,980	2529.1	− 2567	−37.9	× 111 / 657	−6.4
Sum, rounded to a whole point						−43

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	15,987	2358.0	− 2432	−74	× 94 / 682	−10.2
4	15,989	2447.6	− 2473	−25.4	× 119 / 682	−4.4
5	15,991	2464.2	− 2502	−37.8	× 115 / 682	−6.4
6	15,993	2489.8	− 2531	−41.2	× 119 / 682	−7.2
7	15,995	2528.5	− 2552	−23.5	× 120 / 682	−4.1
8	15,997	2546.9	− 2567	−20.1	× 115 / 682	−3.4
Sum, rounded to a whole point						−36

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,112	2382.1	− 2432	−49.9	× 91 / 661	−6.9
4	16,113	2421.3	− 2473	−51.7	× 96 / 661	−7.5
5	16,114	2470.5	− 2502	−31.5	× 123 / 661	−5.9
6	16,115	2491.9	− 2531	−39.1	× 120 / 661	−7.1
7	16,116	2520.4	− 2552	−31.6	× 111 / 661	−5.3
8	16,117	2562.7	− 2567	−4.3	× 120 / 661	−0.8
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	16,140	2368.8	− 2432	−63.2	× 85 / 628	−8.6
4	16,141	2431.2	− 2473	−41.8	× 102 / 628	−6.8
5	16,142	2441.6	− 2502	−60.4	× 95 / 628	−9.1
6	16,143	2488.8	− 2531	−42.2	× 102 / 628	−6.9
7	16,144	2546.9	− 2552	−5.1	× 113 / 628	−0.9
8	16,145	2566.3	− 2567	−0.7	× 131 / 628	−0.1
Sum, rounded to a whole point						−32

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,092	2381.3	− 2432	−50.7	× 91 / 643	−7.2
4	16,093	2418.1	− 2473	−54.9	× 92 / 643	−7.9
5	16,094	2456.4	− 2502	−45.6	× 118 / 643	−8.4
6	16,095	2506.3	− 2531	−24.7	× 116 / 643	−4.5
7	16,096	2532.4	− 2552	−19.6	× 112 / 643	−3.4
8	16,097	2571.0	− 2567	4	× 114 / 643	0.7
Sum, rounded to a whole point						−31

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,037	2405.2	− 2432	−26.8	× 91 / 673	−3.6
4	16,038	2404.6	− 2473	−68.4	× 104 / 673	−10.6
5	16,039	2465.9	− 2502	−36.1	× 97 / 673	−5.2
6	16,040	2522.3	− 2531	−8.7	× 132 / 673	−1.7
7	16,041	2563.4	− 2552	11.4	× 130 / 673	2.2
8	16,042	2560.0	− 2567	−7	× 119 / 673	−1.2
Sum, rounded to a whole point						−20

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,026	2422.2	− 2432	−9.8	× 94 / 724	−1.3
4	16,027	2447.5	− 2473	−25.5	× 109 / 724	−3.8
5	16,028	2458.6	− 2502	−43.4	× 106 / 724	−6.4
6	16,029	2542.7	− 2531	11.7	× 136 / 724	2.2
7	16,030	2578.2	− 2552	26.2	× 157 / 724	5.7
8	16,031	2578.2	− 2567	11.2	× 122 / 724	1.9
Sum, rounded to a whole point						−2

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −55, −41, −43, −36, −33, −32, −31, −20, −2 → −32.6
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 14 · 2016→2017: 2 · 2017→2018: 7 · 2018→2019: 3 · 2019→2022: 1 · 2022→2023: 1 · 2023→2024: 11 · 2024→2025: 18 → average 7.1
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 7.1 × 2.66 = 18.9. Upper limit −13.7, lower limit −51.5.

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.