Del Sur Senior 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 8.

All students

3rd The average 3rd grader scores just under the grade 3 bar. 2436 vs. 2436.
4th The average 4th grader scores 16 points under the grade 3 bar. 2420 vs. 2436. The 4th-grade bar is 2485.
5th The average 5th grader scores just under the grade 4 bar. 2482 vs. 2485. The 5th-grade bar is 2528.
6th The average 6th grader scores just under the grade 4 bar. 2479 vs. 2485. The 6th-grade bar is 2552.
7th The average 7th grader scores 37 points under the grade 5 bar. 2491 vs. 2528. The 7th-grade bar is 2567.
8th The average 8th grader scores just under the grade 4 bar. 2484 vs. 2485. The 8th-grade bar is 2586.

Students fluent in English

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

Grade bars 4th 71 students Just under the grade 3 bar. 7th 72 students 13 points under the grade 5 bar.

English learners

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

Grade bars 4th 11 students 66 points under the grade 3 bar. 7th 14 students 66 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	38,366	2396.8	− 2436	−39.2	× 74 / 533	−5.4
4	38,367	2447.6	− 2485	−37.4	× 69 / 533	−4.8
5	38,370	2465.5	− 2528	−62.5	× 76 / 533	−8.9
6	38,371	2520.9	− 2552	−31.1	× 73 / 533	−4.3
7	38,374	2508.2	− 2567	−58.8	× 123 / 533	−13.6
8	38,375	2547.3	− 2586	−38.7	× 118 / 533	−8.6
Sum, rounded to a whole point						−46

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	35,630	2413.7	− 2436	−22.3	× 59 / 558	−2.4
4	35,633	2437.6	− 2485	−47.4	× 84 / 558	−7.1
5	35,635	2467.7	− 2528	−60.3	× 77 / 558	−8.3
6	35,636	2527.2	− 2552	−24.8	× 86 / 558	−3.8
7	35,639	2509.5	− 2567	−57.5	× 129 / 558	−13.3
8	35,641	2547.8	− 2586	−38.2	× 123 / 558	−8.4
Sum, rounded to a whole point						−43

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	36,333	2378.0	− 2436	−58	× 87 / 616	−8.2
4	36,334	2454.8	− 2485	−30.2	× 94 / 616	−4.6
5	36,336	2451.2	− 2528	−76.8	× 97 / 616	−12.1
6	36,338	2510.9	− 2552	−41.1	× 88 / 616	−5.9
7	36,341	2501.5	− 2567	−65.5	× 123 / 616	−13.1
8	36,342	2541.5	− 2586	−44.5	× 127 / 616	−9.2
Sum, rounded to a whole point						−53

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	36,322	2423.7	− 2436	−12.3	× 73 / 612	−1.5
4	36,324	2444.3	− 2485	−40.7	× 100 / 612	−6.7
5	36,326	2476.9	− 2528	−51.1	× 99 / 612	−8.3
6	36,328	2491.7	− 2552	−60.3	× 95 / 612	−9.4
7	36,330	2461.9	− 2567	−105.1	× 126 / 612	−21.6
8	36,332	2533.6	− 2586	−52.4	× 119 / 612	−10.2
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	36,488	2419.9	− 2436	−16.1	× 76 / 611	−2
4	36,489	2464.8	− 2485	−20.2	× 77 / 611	−2.5
5	36,490	2452.8	− 2528	−75.2	× 106 / 611	−13
6	36,491	2517.0	− 2552	−35	× 102 / 611	−5.8
7	36,492	2513.2	− 2567	−53.8	× 125 / 611	−11
8	36,493	2502.9	− 2586	−83.1	× 125 / 611	−17
Sum, rounded to a whole point						−51

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	36,389	2399.6	− 2436	−36.4	× 66 / 530	−4.5
4	36,390	2443.6	− 2485	−41.4	× 65 / 530	−5.1
5	36,391	2473.9	− 2528	−54.1	× 57 / 530	−5.8
6	36,392	2503.5	− 2552	−48.5	× 76 / 530	−7
7	36,393	2465.6	− 2567	−101.4	× 137 / 530	−26.2
8	36,394	2460.5	− 2586	−125.5	× 129 / 530	−30.5
Sum, rounded to a whole point						−79

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	36,394	2432.2	− 2436	−3.8	× 61 / 519	−0.4
4	36,395	2443.2	− 2485	−41.8	× 66 / 519	−5.3
5	36,396	2448.9	− 2528	−79.1	× 82 / 519	−12.5
6	36,397	2522.8	− 2552	−29.2	× 62 / 519	−3.5
7	36,398	2487.6	− 2567	−79.4	× 108 / 519	−16.5
8	36,399	2478.8	− 2586	−107.2	× 140 / 519	−28.9
Sum, rounded to a whole point						−67

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	36,246	2418.2	− 2436	−17.8	× 62 / 551	−2
4	36,247	2428.7	− 2485	−56.3	× 64 / 551	−6.5
5	36,248	2433.2	− 2528	−94.8	× 71 / 551	−12.2
6	36,249	2475.4	− 2552	−76.6	× 84 / 551	−11.7
7	36,250	2468.8	− 2567	−98.2	× 155 / 551	−27.6
8	36,251	2494.5	− 2586	−91.5	× 115 / 551	−19.1
Sum, rounded to a whole point						−79

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	36,085	2391.7	− 2436	−44.3	× 73 / 567	−5.7
4	36,086	2437.1	− 2485	−47.9	× 61 / 567	−5.2
5	36,087	2448.1	− 2528	−79.9	× 68 / 567	−9.6
6	36,088	2462.4	− 2552	−89.6	× 78 / 567	−12.3
7	36,089	2450.1	− 2567	−116.9	× 132 / 567	−27.2
8	36,090	2505.2	− 2586	−80.8	× 155 / 567	−22.1
Sum, rounded to a whole point						−82

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	36,077	2435.9	− 2436	−0.1	× 74 / 484	0
4	36,078	2420.2	− 2485	−64.8	× 82 / 484	−11
5	36,079	2482.4	− 2528	−45.6	× 60 / 484	−5.7
6	36,080	2478.6	− 2552	−73.4	× 66 / 484	−10
7	36,081	2491.2	− 2567	−75.8	× 86 / 484	−13.5
8	36,082	2483.9	− 2586	−102.1	× 116 / 484	−24.5
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. −46, −43, −53, −58, −51, −79, −67, −79, −82, −65 → −62.3
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 3 · 2016→2017: 10 · 2017→2018: 5 · 2018→2019: 7 · 2019→2022: 28 · 2022→2023: 12 · 2023→2024: 12 · 2024→2025: 3 · 2025→2026: 17 → average 10.8
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 10.8 × 2.66 = 28.7. Upper limit −33.6, lower limit −91.

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.