Intensive Learning Center: 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	21,427	2447.8	− 2436	11.8	× 93 / 295	3.7
4	21,428	2470.2	− 2485	−14.8	× 60 / 295	−3
5	21,431	2507.9	− 2528	−20.1	× 75 / 295	−5.1
6	21,432	2552.3	− 2552	0.3	× 67 / 295	0.1
Sum, rounded to a whole point						−4

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	20,306	2443.7	− 2436	7.7	× 78 / 300	2
4	20,309	2480.0	− 2485	−5	× 91 / 300	−1.5
5	20,311	2543.1	− 2528	15.1	× 63 / 300	3.2
6	20,313	2550.7	− 2552	−1.3	× 68 / 300	−0.3
Sum, rounded to a whole point						3

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	20,633	2436.3	− 2436	0.3	× 109 / 329	0.1
4	20,634	2473.6	− 2485	−11.4	× 77 / 329	−2.7
5	20,637	2519.0	− 2528	−9	× 85 / 329	−2.3
6	20,639	2553.7	− 2552	1.7	× 58 / 329	0.3
Sum, rounded to a whole point						−5

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	20,628	2438.0	− 2436	2	× 86 / 346	0.5
4	20,630	2467.5	− 2485	−17.5	× 105 / 346	−5.3
5	20,632	2524.4	− 2528	−3.6	× 75 / 346	−0.8
6	20,634	2552.4	− 2552	0.4	× 80 / 346	0.1
Sum, rounded to a whole point						−6

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	20,808	2428.0	− 2436	−8	× 82 / 363	−1.8
4	20,809	2472.1	− 2485	−12.9	× 94 / 363	−3.3
5	20,810	2499.7	− 2528	−28.3	× 101 / 363	−7.9
6	20,811	2542.3	− 2552	−9.7	× 86 / 363	−2.3
Sum, rounded to a whole point						−15

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	20,819	2409.2	− 2436	−26.8	× 91 / 347	−7
4	20,820	2467.6	− 2485	−17.4	× 105 / 347	−5.3
5	20,821	2475.8	− 2528	−52.2	× 86 / 347	−12.9
6	20,822	2493.9	− 2552	−58.1	× 65 / 347	−10.9
Sum, rounded to a whole point						−36

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	20,778	2438.0	− 2436	2	× 88 / 353	0.5
4	20,779	2466.6	− 2485	−18.4	× 82 / 353	−4.3
5	20,780	2507.2	− 2528	−20.8	× 102 / 353	−6
6	20,781	2525.1	− 2552	−26.9	× 81 / 353	−6.2
Sum, rounded to a whole point						−16

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	20,656	2436.9	− 2436	0.9	× 68 / 361	0.2
4	20,657	2475.8	− 2485	−9.2	× 93 / 361	−2.4
5	20,658	2476.2	− 2528	−51.8	× 97 / 361	−13.9
6	20,659	2530.7	− 2552	−21.3	× 103 / 361	−6.1
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	20,575	2445.0	− 2436	9	× 66 / 311	1.9
4	20,576	2471.0	− 2485	−14	× 67 / 311	−3
5	20,577	2511.1	− 2528	−16.9	× 86 / 311	−4.7
6	20,578	2492.6	− 2552	−59.4	× 92 / 311	−17.6
Sum, rounded to a whole point						−23

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −4, 3, −5, −6, −15, −36, −16, −22, −23 → −13.8
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 7 · 2016→2017: 8 · 2017→2018: 1 · 2018→2019: 9 · 2019→2022: 21 · 2022→2023: 20 · 2023→2024: 6 · 2024→2025: 1 → average 9.1
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 9.1 × 2.66 = 24.2. Upper limit 10.4, lower limit −38.

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.