Zephyr Lane 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.

Many students here are still learning English. The math test is written in English, with some translation help, and many of its questions are word problems. In 2026, 121 of the 457 students who took the math test were English learners.

All students

3rd The average 3rd grader scores 35 points under the grade 3 bar. 2401 vs. 2436.
4th The average 4th grader scores 14 points under the grade 3 bar. 2422 vs. 2436. The 4th-grade bar is 2485.
5th The average 5th grader scores 24 points under the grade 4 bar. 2461 vs. 2485. The 5th-grade bar is 2528.
6th The average 6th grader scores 20 points under the grade 4 bar. 2465 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 3rd 63 students 33 points under the grade 3 bar. 4th 88 students Just under the grade 3 bar. 5th 88 students 16 points under the grade 4 bar. 6th 97 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 31 students 40 points under the grade 3 bar. 4th 35 students 30 points under the grade 3 bar. 5th 27 students 49 points under the grade 4 bar. 6th 28 students 25 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	16,850	2376.0	− 2436	−60	× 109 / 367	−17.8
4	16,852	2417.9	− 2485	−67.1	× 84 / 367	−15.4
5	16,853	2425.9	− 2528	−102.1	× 89 / 367	−24.8
6	16,855	2473.1	− 2552	−78.9	× 85 / 367	−18.3
Sum, rounded to a whole point						−76

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	15,867	2383.0	− 2436	−53	× 79 / 371	−11.3
4	15,868	2435.6	− 2485	−49.4	× 112 / 371	−14.9
5	15,871	2452.0	− 2528	−76	× 91 / 371	−18.6
6	15,873	2450.8	− 2552	−101.2	× 89 / 371	−24.3
Sum, rounded to a whole point						−69

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,188	2405.4	− 2436	−30.6	× 96 / 382	−7.7
4	16,189	2416.1	− 2485	−68.9	× 82 / 382	−14.8
5	16,191	2472.5	− 2528	−55.5	× 115 / 382	−16.7
6	16,193	2466.5	− 2552	−85.5	× 89 / 382	−19.9
Sum, rounded to a whole point						−59

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,202	2406.0	− 2436	−30	× 90 / 385	−7
4	16,204	2429.5	− 2485	−55.5	× 97 / 385	−14
5	16,206	2443.7	− 2528	−84.3	× 85 / 385	−18.6
6	16,208	2503.8	− 2552	−48.2	× 113 / 385	−14.1
Sum, rounded to a whole point						−54

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,335	2413.6	− 2436	−22.4	× 131 / 408	−7.2
4	16,336	2432.4	− 2485	−52.6	× 92 / 408	−11.9
5	16,337	2476.7	− 2528	−51.3	× 98 / 408	−12.3
6	16,338	2475.2	− 2552	−76.8	× 87 / 408	−16.4
Sum, rounded to a whole point						−48

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,375	2366.8	− 2436	−69.2	× 97 / 461	−14.6
4	16,376	2413.8	− 2485	−71.2	× 126 / 461	−19.5
5	16,377	2421.1	− 2528	−106.9	× 107 / 461	−24.8
6	16,378	2475.9	− 2552	−76.1	× 131 / 461	−21.6
Sum, rounded to a whole point						−80

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,315	2372.5	− 2436	−63.5	× 97 / 431	−14.3
4	16,316	2418.2	− 2485	−66.8	× 106 / 431	−16.4
5	16,317	2456.4	− 2528	−71.6	× 123 / 431	−20.4
6	16,318	2478.9	− 2552	−73.1	× 105 / 431	−17.8
Sum, rounded to a whole point						−69

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,260	2396.7	− 2436	−39.3	× 115 / 453	−10
4	16,261	2409.3	− 2485	−75.7	× 103 / 453	−17.2
5	16,262	2433.3	− 2528	−94.7	× 114 / 453	−23.8
6	16,263	2484.3	− 2552	−67.7	× 121 / 453	−18.1
Sum, rounded to a whole point						−69

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,245	2388.2	− 2436	−47.8	× 109 / 455	−11.5
4	16,246	2427.6	− 2485	−57.4	× 114 / 455	−14.4
5	16,247	2445.1	− 2528	−82.9	× 110 / 455	−20
6	16,248	2467.9	− 2552	−84.1	× 122 / 455	−22.5
Sum, rounded to a whole point						−68

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,262	2400.6	− 2436	−35.4	× 94 / 457	−7.3
4	16,263	2422.2	− 2485	−62.8	× 123 / 457	−16.9
5	16,264	2461.0	− 2528	−67	× 115 / 457	−16.9
6	16,265	2465.3	− 2552	−86.7	× 125 / 457	−23.7
Sum, rounded to a whole point						−65

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −76, −69, −59, −54, −48, −80, −69, −69, −68, −65 → −65.7
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: 10 · 2017→2018: 5 · 2018→2019: 6 · 2019→2022: 32 · 2022→2023: 11 · 2023→2024: 0 · 2024→2025: 1 · 2025→2026: 3 → average 8.3
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 8.3 × 2.66 = 22.1. Upper limit −43.6, lower limit −87.8.

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.