Jack London Elementary: 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.

Measured against the grade bars

The state's math test uses one scale for every grade, so a score means the same thing in grade 3 as in grade 6.

All students

3rd The average 3rd grader scores 63 points under the grade 3 bar. 2373 vs. 2436.
4th The average 4th grader scores 57 points under the grade 3 bar. 2379 vs. 2436. The 4th-grade bar is 2485.
5th The average 5th grader scores 28 points under the grade 3 bar. 2408 vs. 2436. The 5th-grade bar is 2528.
6th The average 6th grader scores 28 points under the grade 4 bar. 2457 vs. 2485. The 6th-grade bar is 2552.

Students fluent in English

Math with English out of the way. Includes students who have only ever spoken English.

Grade bars 6th 75 students 13 points under the grade 4 bar.

English learners

Students leave this group as they become fluent, so its average stays low even where they learn well.

Grade bars 6th 11 students 80 points under the grade 3 bar.

the group's average that grade's own bar the distance between

2026 results. "Meets standard" is the state's mark for being on track for that grade. The state leaves out any group of ten students or fewer, so a grade may be missing from the charts.

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	6,084	2363.8	− 2436	−72.2	× 83 / 271	−22.1
4	6,087	2438.5	− 2485	−46.5	× 83 / 271	−14.2
5	6,088	2430.8	− 2528	−97.2	× 105 / 271	−37.7
Sum, rounded to a whole point						−74

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	5,527	2393.2	− 2436	−42.8	× 78 / 245	−13.6
4	5,529	2422.9	− 2485	−62.1	× 78 / 245	−19.8
5	5,530	2451.7	− 2528	−76.3	× 89 / 245	−27.7
Sum, rounded to a whole point						−61

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	5,661	2413.6	− 2436	−22.4	× 59 / 264	−5
4	5,663	2428.7	− 2485	−56.3	× 76 / 264	−16.2
5	5,664	2439.8	− 2528	−88.2	× 73 / 264	−24.4
6	5,666	2486.4	− 2552	−65.6	× 56 / 264	−13.9
Sum, rounded to a whole point						−60

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	5,654	2403.5	− 2436	−32.5	× 81 / 267	−9.9
4	5,656	2421.6	− 2485	−63.4	× 57 / 267	−13.5
5	5,658	2444.6	− 2528	−83.4	× 68 / 267	−21.2
6	5,660	2493.5	− 2552	−58.5	× 61 / 267	−13.4
Sum, rounded to a whole point						−58

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	5,719	2394.5	− 2436	−41.5	× 68 / 261	−10.8
4	5,720	2466.6	− 2485	−18.4	× 67 / 261	−4.7
5	5,721	2431.6	− 2528	−96.4	× 63 / 261	−23.3
6	5,722	2484.3	− 2552	−67.7	× 63 / 261	−16.3
Sum, rounded to a whole point						−55

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	5,570	2343.2	− 2436	−92.8	× 54 / 265	−18.9
4	5,571	2393.6	− 2485	−91.4	× 82 / 265	−28.3
5	5,572	2408.9	− 2528	−119.1	× 63 / 265	−28.3
6	5,573	2435.8	− 2552	−116.2	× 66 / 265	−28.9
Sum, rounded to a whole point						−104

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	5,566	2367.8	− 2436	−68.2	× 68 / 273	−17
4	5,567	2390.1	− 2485	−94.9	× 64 / 273	−22.2
5	5,568	2416.0	− 2528	−112	× 75 / 273	−30.8
6	5,569	2451.0	− 2552	−101	× 66 / 273	−24.4
Sum, rounded to a whole point						−94

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	5,509	2358.5	− 2436	−77.5	× 56 / 268	−16.2
4	5,510	2410.9	− 2485	−74.1	× 76 / 268	−21
5	5,511	2398.7	− 2528	−129.3	× 69 / 268	−33.3
6	5,512	2432.2	− 2552	−119.8	× 67 / 268	−30
Sum, rounded to a whole point						−100

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	5,471	2333.1	− 2436	−102.9	× 65 / 254	−26.3
4	5,472	2399.8	− 2485	−85.2	× 52 / 254	−17.4
5	5,473	2405.4	− 2528	−122.6	× 74 / 254	−35.7
6	5,474	2421.3	− 2552	−130.7	× 63 / 254	−32.4
Sum, rounded to a whole point						−112

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	5,475	2373.3	− 2436	−62.7	× 54 / 260	−13
4	5,476	2378.8	− 2485	−106.2	× 64 / 260	−26.1
5	5,477	2408.2	− 2528	−119.8	× 56 / 260	−25.8
6	5,478	2456.8	− 2552	−95.2	× 86 / 260	−31.5
Sum, rounded to a whole point						−96

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −74, −61, −60, −58, −55, −104, −94, −100, −112, −96 → −81.4
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 13 · 2016→2017: 1 · 2017→2018: 2 · 2018→2019: 3 · 2019→2022: 49 · 2022→2023: 10 · 2023→2024: 6 · 2024→2025: 12 · 2025→2026: 16 → average 12.4
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 12.4 × 2.66 = 33. Upper limit −48.4, lower limit −114.4.

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.