Seventy-Fifth Street Elementary: english

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.

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	31,996	2367.5	− 2432	−64.5	× 146 / 512	−18.4
4	31,998	2385.6	− 2473	−87.4	× 130 / 512	−22.2
5	32,000	2451.1	− 2502	−50.9	× 121 / 512	−12
6	32,002	2466.8	− 2531	−64.2	× 115 / 512	−14.4
Sum, rounded to a whole point						−67

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	30,210	2386.7	− 2432	−45.3	× 149 / 537	−12.6
4	30,212	2423.3	− 2473	−49.7	× 155 / 537	−14.3
5	30,213	2441.4	− 2502	−60.6	× 119 / 537	−13.4
6	30,216	2476.7	− 2531	−54.3	× 114 / 537	−11.5
Sum, rounded to a whole point						−52

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	30,775	2374.3	− 2432	−57.7	× 144 / 561	−14.8
4	30,777	2409.5	− 2473	−63.5	× 149 / 561	−16.9
5	30,779	2444.1	− 2502	−57.9	× 157 / 561	−16.2
6	30,780	2455.7	− 2531	−75.3	× 111 / 561	−14.9
Sum, rounded to a whole point						−63

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	30,821	2398.2	− 2432	−33.8	× 129 / 549	−7.9
4	30,823	2431.6	− 2473	−41.4	× 142 / 549	−10.7
5	30,825	2443.7	− 2502	−58.3	× 145 / 549	−15.4
6	30,827	2471.3	− 2531	−59.7	× 133 / 549	−14.5
Sum, rounded to a whole point						−49

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	30,993	2380.5	− 2432	−51.5	× 134 / 526	−13.1
4	30,994	2433.3	− 2473	−39.7	× 141 / 526	−10.6
5	30,995	2448.1	− 2502	−53.9	× 130 / 526	−13.3
6	30,996	2476.9	− 2531	−54.1	× 121 / 526	−12.4
Sum, rounded to a whole point						−50

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	31,012	2363.8	− 2432	−68.2	× 116 / 438	−18.1
4	31,013	2398.8	− 2473	−74.2	× 108 / 438	−18.3
5	31,014	2442.0	− 2502	−60	× 117 / 438	−16
6	31,015	2469.9	− 2531	−61.1	× 97 / 438	−13.5
Sum, rounded to a whole point						−66

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	31,069	2362.3	− 2432	−69.7	× 121 / 445	−19
4	31,070	2389.6	− 2473	−83.4	× 115 / 445	−21.6
5	31,071	2429.7	− 2502	−72.3	× 110 / 445	−17.9
6	31,072	2452.0	− 2531	−79	× 99 / 445	−17.6
Sum, rounded to a whole point						−76

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	30,935	2377.8	− 2432	−54.2	× 97 / 421	−12.5
4	30,936	2389.3	− 2473	−83.7	× 119 / 421	−23.7
5	30,937	2423.2	− 2502	−78.8	× 107 / 421	−20
6	30,938	2457.4	− 2531	−73.6	× 98 / 421	−17.1
Sum, rounded to a whole point						−73

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	30,794	2392.4	− 2432	−39.6	× 98 / 420	−9.2
4	30,795	2435.5	− 2473	−37.5	× 99 / 420	−8.8
5	30,796	2434.1	− 2502	−67.9	× 126 / 420	−20.4
6	30,797	2491.9	− 2531	−39.1	× 97 / 420	−9
Sum, rounded to a whole point						−47

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −67, −52, −63, −49, −50, −66, −76, −73, −47 → −60.3
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 15 · 2016→2017: 11 · 2017→2018: 14 · 2018→2019: 1 · 2019→2022: 16 · 2022→2023: 10 · 2023→2024: 3 · 2024→2025: 26 → average 12
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 12 × 2.66 = 31.9. Upper limit −28.4, lower limit −92.2.

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.