Jackson 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.

3rd The average 3rd grader scores 61 points under the grade 3 bar. 2375 vs. 2436.
4th The average 4th grader scores 25 points under the grade 3 bar. 2411 vs. 2436. The 4th-grade bar is 2485.
5th The average 5th grader scores 40 points under the grade 4 bar. 2445 vs. 2485. The 5th-grade bar is 2528.
6th The average 6th grader scores 17 points under the grade 5 bar. 2511 vs. 2528. The 6th-grade bar is 2552.

2026 results. "Meets standard" is the state's mark for being on track for that grade.

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	4,132	2380.4	− 2436	−55.6	× 76 / 208	−20.3
4	4,135	2457.2	− 2485	−27.8	× 59 / 208	−7.9
5	4,136	2454.3	− 2528	−73.7	× 73 / 208	−25.9
Sum, rounded to a whole point						−54

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	3,639	2395.0	− 2436	−41	× 73 / 210	−14.3
4	3,641	2434.6	− 2485	−50.4	× 75 / 210	−18
5	3,643	2469.2	− 2528	−58.8	× 62 / 210	−17.4
Sum, rounded to a whole point						−50

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	3,727	2426.6	− 2436	−9.4	× 64 / 213	−2.8
4	3,729	2472.9	− 2485	−12.1	× 71 / 213	−4
5	3,731	2459.2	− 2528	−68.8	× 78 / 213	−25.2
Sum, rounded to a whole point						−32

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	3,729	2416.6	− 2436	−19.4	× 57 / 181	−6.1
4	3,731	2488.0	− 2485	3	× 58 / 181	1
5	3,733	2488.9	− 2528	−39.1	× 66 / 181	−14.3
Sum, rounded to a whole point						−19

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	3,766	2433.2	− 2436	−2.8	× 64 / 187	−1
4	3,767	2482.8	− 2485	−2.2	× 60 / 187	−0.7
5	3,768	2499.8	− 2528	−28.2	× 63 / 187	−9.5
Sum, rounded to a whole point						−11

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	3,610	2407.5	− 2436	−28.5	× 54 / 166	−9.3
4	3,611	2468.5	− 2485	−16.5	× 54 / 166	−5.4
5	3,612	2471.4	− 2528	−56.6	× 58 / 166	−19.8
Sum, rounded to a whole point						−34

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	3,646	2401.3	− 2436	−34.7	× 54 / 187	−10
4	3,647	2462.0	− 2485	−23	× 70 / 187	−8.6
5	3,648	2493.4	− 2528	−34.6	× 63 / 187	−11.7
Sum, rounded to a whole point						−30

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	3,630	2378.5	− 2436	−57.5	× 75 / 193	−22.3
4	3,631	2456.1	− 2485	−28.9	× 49 / 193	−7.3
5	3,632	2466.4	− 2528	−61.6	× 69 / 193	−22
Sum, rounded to a whole point						−52

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	3,596	2399.5	− 2436	−36.5	× 75 / 203	−13.5
4	3,597	2466.5	− 2485	−18.5	× 75 / 203	−6.8
5	3,598	2463.6	− 2528	−64.4	× 53 / 203	−16.8
Sum, rounded to a whole point						−37

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	3,557	2364.5	− 2436	−71.5	× 60 / 256	−16.8
4	3,558	2460.0	− 2485	−25	× 74 / 256	−7.2
5	3,559	2478.6	− 2528	−49.4	× 73 / 256	−14.1
6	3,560	2500.9	− 2552	−51.1	× 49 / 256	−9.8
Sum, rounded to a whole point						−48

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	3,533	2374.7	− 2436	−61.3	× 70 / 269	−16
4	3,534	2411.0	− 2485	−74	× 58 / 269	−16
5	3,535	2445.3	− 2528	−82.7	× 70 / 269	−21.5
6	3,536	2511.3	− 2552	−40.7	× 71 / 269	−10.7
Sum, rounded to a whole point						−64

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −54, −50, −32, −19, −11, −34, −30, −52, −37, −48, −64 → −39.2
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 4 · 2016→2017: 18 · 2017→2018: 13 · 2018→2019: 8 · 2019→2021: 23 · 2021→2022: 4 · 2022→2023: 22 · 2023→2024: 15 · 2024→2025: 11 · 2025→2026: 16 → average 13.4
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 13.4 × 2.66 = 35.6. Upper limit −3.6, lower limit −74.8.

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.