Del Rey 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 67 points under the grade 3 bar. 2369 vs. 2436.
4th The average 4th grader scores 66 points under the grade 3 bar. 2370 vs. 2436. The 4th-grade bar is 2485.
5th The average 5th grader scores 51 points under the grade 3 bar. 2385 vs. 2436. The 5th-grade bar is 2528.
6th The average 6th grader scores 36 points under the grade 4 bar. 2449 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 51 students 64 points under the grade 3 bar. 4th 65 students 60 points under the grade 3 bar. 5th 77 students 45 points under the grade 3 bar. 6th 80 students 23 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 3rd 22 students 73 points under the grade 3 bar. 4th 24 students 84 points under the grade 3 bar. 5th 21 students 72 points under the grade 3 bar. 6th 17 students 48 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	68,554	2345.1	− 2436	−90.9	× 75 / 323	−21.1
4	68,557	2379.9	− 2485	−105.1	× 95 / 323	−30.9
5	68,558	2413.7	− 2528	−114.3	× 71 / 323	−25.1
6	68,561	2439.8	− 2552	−112.2	× 82 / 323	−28.5
Sum, rounded to a whole point						−106

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	63,501	2373.7	− 2436	−62.3	× 108 / 339	−19.8
4	63,504	2364.5	− 2485	−120.5	× 68 / 339	−24.2
5	63,505	2418.0	− 2528	−110	× 93 / 339	−30.2
6	63,508	2418.5	− 2552	−133.5	× 70 / 339	−27.6
Sum, rounded to a whole point						−102

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	65,299	2378.7	− 2436	−57.3	× 78 / 336	−13.3
4	65,302	2390.5	− 2485	−94.5	× 92 / 336	−25.9
5	65,303	2397.5	− 2528	−130.5	× 79 / 336	−30.7
6	65,305	2422.0	− 2552	−130	× 87 / 336	−33.7
Sum, rounded to a whole point						−104

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	65,383	2365.0	− 2436	−71	× 103 / 354	−20.7
4	65,386	2369.1	− 2485	−115.9	× 86 / 354	−28.2
5	65,387	2415.5	− 2528	−112.5	× 90 / 354	−28.6
6	65,390	2393.1	− 2552	−158.9	× 75 / 354	−33.7
Sum, rounded to a whole point						−111

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	65,773	2391.9	− 2436	−44.1	× 96 / 375	−11.3
4	65,774	2389.3	− 2485	−95.7	× 99 / 375	−25.3
5	65,775	2416.5	− 2528	−111.5	× 86 / 375	−25.6
6	65,776	2416.8	− 2552	−135.2	× 94 / 375	−33.9
Sum, rounded to a whole point						−96

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	65,834	2355.3	− 2436	−80.7	× 74 / 360	−16.6
4	65,835	2378.4	− 2485	−106.6	× 92 / 360	−27.2
5	65,836	2389.9	− 2528	−138.1	× 99 / 360	−38
6	65,837	2403.3	− 2552	−148.7	× 95 / 360	−39.2
Sum, rounded to a whole point						−121

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	65,841	2374.8	− 2436	−61.2	× 93 / 362	−15.7
4	65,842	2386.3	− 2485	−98.7	× 71 / 362	−19.4
5	65,843	2391.7	− 2528	−136.3	× 99 / 362	−37.3
6	65,844	2426.0	− 2552	−126	× 99 / 362	−34.5
Sum, rounded to a whole point						−107

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	65,809	2354.0	− 2436	−82	× 105 / 382	−22.5
4	65,810	2390.3	− 2485	−94.7	× 105 / 382	−26
5	65,811	2391.6	− 2528	−136.4	× 74 / 382	−26.4
6	65,812	2402.2	− 2552	−149.8	× 98 / 382	−38.4
Sum, rounded to a whole point						−113

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	65,569	2341.7	− 2436	−94.3	× 95 / 365	−24.5
4	65,570	2377.6	− 2485	−107.4	× 98 / 365	−28.8
5	65,571	2404.7	− 2528	−123.3	× 103 / 365	−34.8
6	65,572	2427.9	− 2552	−124.1	× 69 / 365	−23.5
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	65,541	2369.4	− 2436	−66.6	× 73 / 357	−13.6
4	65,542	2369.6	− 2485	−115.4	× 89 / 357	−28.8
5	65,543	2385.4	− 2528	−142.6	× 98 / 357	−39.1
6	65,544	2448.9	− 2552	−103.1	× 97 / 357	−28
Sum, rounded to a whole point						−110

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −106, −102, −104, −111, −96, −121, −107, −113, −112, −110 → −108.2
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: 2 · 2017→2018: 7 · 2018→2019: 15 · 2019→2022: 25 · 2022→2023: 14 · 2023→2024: 6 · 2024→2025: 1 · 2025→2026: 2 → average 8.4
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 8.4 × 2.66 = 22.3. Upper limit −85.9, lower limit −130.5.

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.