Clinton, William Jefferson: math

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	39,232	2424.3	− 2436	−11.7	× 149 / 575	−3
4	39,234	2432.3	− 2485	−52.7	× 174 / 575	−15.9
5	39,236	2438.3	− 2528	−89.7	× 121 / 575	−18.9
6	39,238	2499.4	− 2552	−52.6	× 76 / 575	−7
7	39,240	2494.0	− 2567	−73	× 55 / 575	−7
Sum, rounded to a whole point						−52

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	36,421	2427.4	− 2436	−8.6	× 121 / 633	−1.6
4	36,422	2481.9	− 2485	−3.1	× 136 / 633	−0.7
5	36,424	2430.2	− 2528	−97.8	× 174 / 633	−26.9
6	36,427	2487.1	− 2552	−64.9	× 73 / 633	−7.5
7	36,429	2526.3	− 2567	−40.7	× 68 / 633	−4.4
8	36,431	2519.2	− 2586	−66.8	× 61 / 633	−6.4
Sum, rounded to a whole point						−47

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	37,187	2431.3	− 2436	−4.7	× 146 / 592	−1.2
4	37,189	2498.9	− 2485	13.9	× 112 / 592	2.6
5	37,191	2466.6	− 2528	−61.4	× 132 / 592	−13.7
6	37,192	2526.6	− 2552	−25.4	× 73 / 592	−3.1
7	37,194	2530.3	− 2567	−36.7	× 67 / 592	−4.2
8	37,196	2571.2	− 2586	−14.8	× 62 / 592	−1.6
Sum, rounded to a whole point						−21

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	37,135	2453.9	− 2436	17.9	× 103 / 565	3.3
4	37,137	2473.2	− 2485	−11.8	× 139 / 565	−2.9
5	37,139	2472.4	− 2528	−55.6	× 116 / 565	−11.4
6	37,141	2549.8	− 2552	−2.2	× 71 / 565	−0.3
7	37,143	2546.3	− 2567	−20.7	× 74 / 565	−2.7
8	37,145	2547.6	− 2586	−38.4	× 62 / 565	−4.2
Sum, rounded to a whole point						−18

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	37,338	2427.5	− 2436	−8.5	× 115 / 588	−1.7
4	37,339	2483.9	− 2485	−1.1	× 102 / 588	−0.2
5	37,340	2491.8	− 2528	−36.2	× 130 / 588	−8
6	37,341	2540.1	− 2552	−11.9	× 101 / 588	−2
7	37,342	2599.8	− 2567	32.8	× 70 / 588	3.9
8	37,343	2563.6	− 2586	−22.4	× 70 / 588	−2.7
Sum, rounded to a whole point						−11

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	37,245	2404.7	− 2436	−31.3	× 96 / 488	−6.2
4	37,246	2419.8	− 2485	−65.2	× 109 / 488	−14.6
5	37,247	2456.8	− 2528	−71.2	× 97 / 488	−14.2
6	37,248	2550.5	− 2552	−1.5	× 67 / 488	−0.2
7	37,249	2558.1	− 2567	−8.9	× 62 / 488	−1.1
8	37,250	2571.4	− 2586	−14.6	× 57 / 488	−1.7
Sum, rounded to a whole point						−38

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	37,278	2397.4	− 2436	−38.6	× 114 / 523	−8.4
4	37,279	2472.4	− 2485	−12.6	× 102 / 523	−2.5
5	37,280	2458.0	− 2528	−70	× 111 / 523	−14.9
6	37,281	2580.6	− 2552	28.6	× 67 / 523	3.7
7	37,282	2545.2	− 2567	−21.8	× 66 / 523	−2.8
8	37,283	2581.9	− 2586	−4.1	× 63 / 523	−0.5
Sum, rounded to a whole point						−25

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	37,132	2400.9	− 2436	−35.1	× 99 / 503	−6.9
4	37,133	2469.1	− 2485	−15.9	× 107 / 503	−3.4
5	37,134	2481.9	− 2528	−46.1	× 96 / 503	−8.8
6	37,135	2575.0	− 2552	23	× 68 / 503	3.1
7	37,136	2535.9	− 2567	−31.1	× 65 / 503	−4
8	37,137	2568.1	− 2586	−17.9	× 68 / 503	−2.4
Sum, rounded to a whole point						−22

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	36,969	2416.2	− 2436	−19.8	× 85 / 457	−3.7
4	36,970	2496.9	− 2485	11.9	× 93 / 457	2.4
5	36,971	2452.1	− 2528	−75.9	× 96 / 457	−15.9
6	36,972	2551.2	− 2552	−0.8	× 64 / 457	−0.1
7	36,973	2571.9	− 2567	4.9	× 64 / 457	0.7
8	36,974	2634.6	− 2586	48.6	× 55 / 457	5.8
Sum, rounded to a whole point						−11

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −52, −47, −21, −18, −11, −38, −25, −22, −11 → −27.2
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 5 · 2016→2017: 26 · 2017→2018: 3 · 2018→2019: 7 · 2019→2022: 27 · 2022→2023: 13 · 2023→2024: 3 · 2024→2025: 11 → average 11.9
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 11.9 × 2.66 = 31.7. Upper limit 4.5, lower limit −58.9.

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.