Zela Davis: math · 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.

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 5.

All students

3rd The average 3rd grader scores 30 points under the grade 3 bar. 2406 vs. 2436.
4th The average 4th grader scores 44 points under the grade 4 bar. 2441 vs. 2485.
5th The average 5th grader scores 17 points under the grade 4 bar. 2468 vs. 2485. The 5th-grade bar is 2528.

Students fluent in English

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

Grade bars 3rd 110 students 24 points under the grade 3 bar. 4th 108 students 31 points under the grade 4 bar. 5th 111 students Just 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 3rd 27 students 55 points under the grade 3 bar. 4th 30 students 45 points under the grade 3 bar. 5th 22 students 45 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	24,373	2401.0	− 2436	−35	× 190 / 579	−11.5
4	24,375	2439.6	− 2485	−45.4	× 204 / 579	−16
5	24,377	2467.1	− 2528	−60.9	× 185 / 579	−19.5
Sum, rounded to a whole point						−47

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	22,760	2398.6	− 2436	−37.4	× 210 / 602	−13
4	22,761	2440.3	− 2485	−44.7	× 188 / 602	−14
5	22,764	2463.2	− 2528	−64.8	× 204 / 602	−22
Sum, rounded to a whole point						−49

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	23,193	2408.0	− 2436	−28	× 184 / 574	−9
4	23,195	2453.6	− 2485	−31.4	× 201 / 574	−11
5	23,197	2476.3	− 2528	−51.7	× 189 / 574	−17
Sum, rounded to a whole point						−37

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	23,195	2427.2	− 2436	−8.8	× 181 / 568	−2.8
4	23,198	2440.8	− 2485	−44.2	× 192 / 568	−14.9
5	23,199	2492.7	− 2528	−35.3	× 195 / 568	−12.1
Sum, rounded to a whole point						−30

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	23,369	2412.7	− 2436	−23.3	× 185 / 552	−7.8
4	23,370	2448.1	− 2485	−36.9	× 180 / 552	−12
5	23,371	2472.7	− 2528	−55.3	× 187 / 552	−18.7
Sum, rounded to a whole point						−39

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	23,332	2404.8	− 2436	−31.2	× 161 / 462	−10.9
4	23,333	2415.3	− 2485	−69.7	× 137 / 462	−20.7
5	23,334	2465.0	− 2528	−63	× 164 / 462	−22.4
Sum, rounded to a whole point						−54

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	23,305	2415.9	− 2436	−20.1	× 139 / 429	−6.5
4	23,306	2443.2	− 2485	−41.8	× 155 / 429	−15.1
5	23,307	2454.4	− 2528	−73.6	× 135 / 429	−23.2
Sum, rounded to a whole point						−45

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	23,169	2399.4	− 2436	−36.6	× 138 / 417	−12.1
4	23,170	2437.2	− 2485	−47.8	× 138 / 417	−15.8
5	23,171	2480.8	− 2528	−47.2	× 141 / 417	−16
Sum, rounded to a whole point						−44

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	23,074	2422.1	− 2436	−13.9	× 139 / 413	−4.7
4	23,075	2438.9	− 2485	−46.1	× 135 / 413	−15.1
5	23,076	2469.7	− 2528	−58.3	× 139 / 413	−19.6
Sum, rounded to a whole point						−39

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	23,142	2406.1	− 2436	−29.9	× 137 / 408	−10
4	23,143	2440.7	− 2485	−44.3	× 138 / 408	−15
5	23,144	2468.4	− 2528	−59.6	× 133 / 408	−19.4
Sum, rounded to a whole point						−44

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −47, −49, −37, −30, −39, −54, −45, −44, −39, −44 → −42.8
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 2 · 2016→2017: 12 · 2017→2018: 7 · 2018→2019: 9 · 2019→2022: 15 · 2022→2023: 9 · 2023→2024: 1 · 2024→2025: 5 · 2025→2026: 5 → average 7.2
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 7.2 × 2.66 = 19.2. Upper limit −23.6, lower limit −62.

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.