San Lorenzo Unified: english

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	3,495	2373.5	− 2432	−58.5	× 844 / 5406	−9.1
4	3,496	2415.6	− 2473	−57.4	× 879 / 5406	−9.3
5	3,499	2456.0	− 2502	−46	× 747 / 5406	−6.4
6	3,500	2467.7	− 2531	−63.3	× 793 / 5406	−9.3
7	3,503	2487.5	− 2552	−64.5	× 699 / 5406	−8.3
8	3,504	2509.9	− 2567	−57.1	× 770 / 5406	−8.1
11	3,507	2551.3	− 2583	−31.7	× 674 / 5406	−4
Sum, rounded to a whole point						−55

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	3,050	2375.9	− 2432	−56.1	× 814 / 5460	−8.4
4	3,052	2428.8	− 2473	−44.2	× 850 / 5460	−6.9
5	3,054	2453.5	− 2502	−48.5	× 802 / 5460	−7.1
6	3,057	2474.8	− 2531	−56.2	× 726 / 5460	−7.5
7	3,058	2503.0	− 2552	−49	× 832 / 5460	−7.5
8	3,061	2537.6	− 2567	−29.4	× 737 / 5460	−4
11	3,062	2583.8	− 2583	0.8	× 699 / 5460	0.1
Sum, rounded to a whole point						−41

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	3,146	2381.1	− 2432	−50.9	× 777 / 5389	−7.3
4	3,148	2416.3	− 2473	−56.7	× 784 / 5389	−8.2
5	3,151	2449.5	− 2502	−52.5	× 728 / 5389	−7.1
6	3,153	2478.3	− 2531	−52.7	× 727 / 5389	−7.1
7	3,155	2497.2	− 2552	−54.8	× 722 / 5389	−7.3
8	3,156	2526.9	− 2567	−40.1	× 837 / 5389	−6.2
11	3,158	2568.3	− 2583	−14.7	× 814 / 5389	−2.2
Sum, rounded to a whole point						−46

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	3,144	2390.6	− 2432	−41.4	× 755 / 5262	−5.9
4	3,147	2426.7	− 2473	−46.3	× 759 / 5262	−6.7
5	3,148	2449.1	− 2502	−52.9	× 679 / 5262	−6.8
6	3,150	2475.1	− 2531	−55.9	× 740 / 5262	−7.9
7	3,153	2502.1	− 2552	−49.9	× 745 / 5262	−7.1
8	3,154	2515.2	− 2567	−51.8	× 744 / 5262	−7.3
11	3,157	2579.7	− 2583	−3.3	× 840 / 5262	−0.5
Sum, rounded to a whole point						−42

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	3,168	2387.1	− 2432	−44.9	× 729 / 5044	−6.5
4	3,169	2426.7	− 2473	−46.3	× 729 / 5044	−6.7
5	3,170	2448.4	− 2502	−53.6	× 679 / 5044	−7.2
6	3,171	2476.7	− 2531	−54.3	× 666 / 5044	−7.2
7	3,172	2504.0	− 2552	−48	× 748 / 5044	−7.1
8	3,173	2509.2	− 2567	−57.8	× 743 / 5044	−8.5
11	3,174	2583.6	− 2583	0.6	× 750 / 5044	0.1
Sum, rounded to a whole point						−43

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	3,062	2372.9	− 2432	−59.1	× 591 / 4069	−8.6
4	3,063	2412.4	− 2473	−60.6	× 557 / 4069	−8.3
5	3,064	2442.4	− 2502	−59.6	× 529 / 4069	−7.7
6	3,065	2470.8	− 2531	−60.2	× 564 / 4069	−8.3
7	3,066	2509.0	− 2552	−43	× 577 / 4069	−6.1
8	3,067	2528.1	− 2567	−38.9	× 603 / 4069	−5.8
11	3,068	2567.9	− 2583	−15.1	× 648 / 4069	−2.4
Sum, rounded to a whole point						−47

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	3,008	2369.2	− 2432	−62.8	× 578 / 4027	−9
4	3,009	2412.1	− 2473	−60.9	× 593 / 4027	−9
5	3,010	2437.3	− 2502	−64.7	× 491 / 4027	−7.9
6	3,011	2467.6	− 2531	−63.4	× 524 / 4027	−8.2
7	3,012	2496.6	− 2552	−55.4	× 566 / 4027	−7.8
8	3,013	2509.3	− 2567	−57.7	× 605 / 4027	−8.7
11	3,014	2574.4	− 2583	−8.6	× 670 / 4027	−1.4
Sum, rounded to a whole point						−52

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	2,978	2363.3	− 2432	−68.7	× 557 / 3814	−10
4	2,979	2413.6	− 2473	−59.4	× 569 / 3814	−8.9
5	2,980	2433.0	− 2502	−69	× 504 / 3814	−9.1
6	2,981	2472.7	− 2531	−58.3	× 459 / 3814	−7
7	2,982	2495.4	− 2552	−56.6	× 528 / 3814	−7.8
8	2,983	2508.7	− 2567	−58.3	× 579 / 3814	−8.9
11	2,984	2542.0	− 2583	−41	× 618 / 3814	−6.6
Sum, rounded to a whole point						−58

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	2,946	2370.5	− 2432	−61.5	× 574 / 3749	−9.4
4	2,947	2405.9	− 2473	−67.1	× 565 / 3749	−10.1
5	2,948	2441.3	− 2502	−60.7	× 505 / 3749	−8.2
6	2,949	2475.7	− 2531	−55.3	× 465 / 3749	−6.9
7	2,950	2484.6	− 2552	−67.4	× 499 / 3749	−9
8	2,951	2500.4	− 2567	−66.6	× 536 / 3749	−9.5
11	2,952	2558.3	− 2583	−24.7	× 605 / 3749	−4
Sum, rounded to a whole point						−57

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −55, −41, −46, −42, −43, −47, −52, −58, −57 → −49
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 14 · 2016→2017: 5 · 2017→2018: 4 · 2018→2019: 1 · 2019→2022: 4 · 2022→2023: 5 · 2023→2024: 6 · 2024→2025: 1 → average 5
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 5 × 2.66 = 13.3. Upper limit −35.7, lower limit −62.3.

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.