San Leandro Unified: math

The shaded band is this district'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.

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	3,365	2398.0	− 2436	−38	× 655 / 4338	−5.7
4	3,367	2437.4	− 2485	−47.6	× 644 / 4338	−7.1
5	3,369	2460.8	− 2528	−67.2	× 664 / 4338	−10.3
6	3,371	2472.0	− 2552	−80	× 554 / 4338	−10.2
7	3,373	2474.8	− 2567	−92.2	× 592 / 4338	−12.6
8	3,375	2504.7	− 2586	−81.3	× 609 / 4338	−11.4
11	3,377	2507.9	− 2628	−120.1	× 620 / 4338	−17.2
Sum, rounded to a whole point						−74

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	2,947	2420.4	− 2436	−15.6	× 641 / 4311	−2.3
4	2,949	2439.5	− 2485	−45.5	× 636 / 4311	−6.7
5	2,950	2468.4	− 2528	−59.6	× 633 / 4311	−8.8
6	2,953	2469.2	− 2552	−82.8	× 651 / 4311	−12.5
7	2,954	2492.1	− 2567	−74.9	× 563 / 4311	−9.8
8	2,957	2501.1	− 2586	−84.9	× 582 / 4311	−11.5
11	2,958	2537.4	− 2628	−90.6	× 605 / 4311	−12.7
Sum, rounded to a whole point						−64

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	3,028	2416.4	− 2436	−19.6	× 629 / 4487	−2.7
4	3,031	2444.7	− 2485	−40.3	× 658 / 4487	−5.9
5	3,032	2466.3	− 2528	−61.7	× 662 / 4487	−9.1
6	3,034	2470.9	− 2552	−81.1	× 634 / 4487	−11.5
7	3,037	2488.0	− 2567	−79	× 653 / 4487	−11.5
8	3,039	2498.8	− 2586	−87.2	× 561 / 4487	−10.9
11	3,040	2524.8	− 2628	−103.2	× 690 / 4487	−15.9
Sum, rounded to a whole point						−67

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	3,029	2423.1	− 2436	−12.9	× 601 / 4591	−1.7
4	3,031	2443.1	− 2485	−41.9	× 630 / 4591	−5.7
5	3,033	2470.4	− 2528	−57.6	× 671 / 4591	−8.4
6	3,035	2454.9	− 2552	−97.1	× 676 / 4591	−14.3
7	3,037	2488.0	− 2567	−79	× 656 / 4591	−11.3
8	3,039	2493.3	− 2586	−92.7	× 678 / 4591	−13.7
11	3,041	2513.4	− 2628	−114.6	× 679 / 4591	−16.9
Sum, rounded to a whole point						−72

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	3,058	2420.2	− 2436	−15.8	× 650 / 4511	−2.3
4	3,059	2453.5	− 2485	−31.5	× 606 / 4511	−4.2
5	3,060	2469.8	− 2528	−58.2	× 634 / 4511	−8.2
6	3,061	2478.1	− 2552	−73.9	× 640 / 4511	−10.5
7	3,062	2493.0	− 2567	−74	× 676 / 4511	−11.1
8	3,063	2509.1	− 2586	−76.9	× 653 / 4511	−11.1
11	3,064	2507.0	− 2628	−121	× 652 / 4511	−17.5
Sum, rounded to a whole point						−65

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	2,952	2412.5	− 2436	−23.5	× 647 / 3994	−3.8
4	2,953	2432.2	− 2485	−52.8	× 636 / 3994	−8.4
5	2,954	2452.9	− 2528	−75.1	× 554 / 3994	−10.4
6	2,955	2450.2	− 2552	−101.8	× 581 / 3994	−14.8
7	2,956	2488.7	− 2567	−78.3	× 582 / 3994	−11.4
8	2,957	2470.6	− 2586	−115.4	× 616 / 3994	−17.8
11	2,958	2533.1	− 2628	−94.9	× 378 / 3994	−9
Sum, rounded to a whole point						−76

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	2,882	2419.2	− 2436	−16.8	× 647 / 4379	−2.5
4	2,883	2445.3	− 2485	−39.7	× 661 / 4379	−6
5	2,884	2468.5	− 2528	−59.5	× 634 / 4379	−8.6
6	2,885	2445.1	− 2552	−106.9	× 580 / 4379	−14.2
7	2,886	2474.7	− 2567	−92.3	× 621 / 4379	−13.1
8	2,887	2490.2	− 2586	−95.8	× 580 / 4379	−12.7
11	2,888	2493.1	− 2628	−134.9	× 656 / 4379	−20.2
Sum, rounded to a whole point						−77

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	2,854	2409.4	− 2436	−26.6	× 649 / 4432	−3.9
4	2,855	2444.9	− 2485	−40.1	× 647 / 4432	−5.9
5	2,856	2476.3	− 2528	−51.7	× 660 / 4432	−7.7
6	2,857	2470.0	− 2552	−82	× 631 / 4432	−11.7
7	2,858	2463.5	− 2567	−103.5	× 584 / 4432	−13.6
8	2,859	2472.1	− 2586	−113.9	× 632 / 4432	−16.2
11	2,860	2506.3	− 2628	−121.7	× 629 / 4432	−17.3
Sum, rounded to a whole point						−76

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	2,818	2412.4	− 2436	−23.6	× 616 / 4431	−3.3
4	2,819	2440.3	− 2485	−44.7	× 652 / 4431	−6.6
5	2,820	2475.5	− 2528	−52.5	× 641 / 4431	−7.6
6	2,821	2473.9	− 2552	−78.1	× 673 / 4431	−11.9
7	2,822	2491.4	− 2567	−75.6	× 638 / 4431	−10.9
8	2,823	2474.2	− 2586	−111.8	× 584 / 4431	−14.7
11	2,824	2497.4	− 2628	−130.6	× 627 / 4431	−18.5
Sum, rounded to a whole point						−73

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	2,774	2406.4	− 2436	−29.6	× 613 / 4352	−4.2
4	2,775	2449.7	− 2485	−35.3	× 614 / 4352	−5
5	2,776	2474.0	− 2528	−54	× 636 / 4352	−7.9
6	2,777	2475.3	− 2552	−76.7	× 594 / 4352	−10.5
7	2,778	2501.4	− 2567	−65.6	× 654 / 4352	−9.9
8	2,779	2505.3	− 2586	−80.7	× 646 / 4352	−12
11	2,780	2520.3	− 2628	−107.7	× 595 / 4352	−14.7
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. −74, −64, −67, −72, −65, −76, −77, −76, −73, −64 → −70.8
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 10 · 2016→2017: 3 · 2017→2018: 5 · 2018→2019: 7 · 2019→2022: 11 · 2022→2023: 1 · 2023→2024: 1 · 2024→2025: 3 · 2025→2026: 9 → average 5.6
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 5.6 × 2.66 = 14.9. Upper limit −55.9, lower limit −85.7.

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 — for a district, the total across its schools. From 2014–15, 2015–16, 2016–17, 2017–18, 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25, 2025–26.

San Leandro Unified