San Joaquin 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	52,584	2393.9	− 2432	−38.1	× 60 / 240	−9.5
4	52,585	2409.6	− 2473	−63.4	× 55 / 240	−14.5
5	52,588	2458.3	− 2502	−43.7	× 63 / 240	−11.5
6	52,589	2492.1	− 2531	−38.9	× 62 / 240	−10
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	48,859	2428.1	− 2432	−3.9	× 45 / 202	−0.9
4	48,861	2427.2	− 2473	−45.8	× 53 / 202	−12
5	48,864	2464.9	− 2502	−37.1	× 50 / 202	−9.2
6	48,866	2495.7	− 2531	−35.3	× 54 / 202	−9.4
Sum, rounded to a whole point						−32

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	50,196	2365.1	− 2432	−66.9	× 50 / 201	−16.6
4	50,197	2461.2	− 2473	−11.8	× 49 / 201	−2.9
5	50,199	2482.7	− 2502	−19.3	× 49 / 201	−4.7
6	50,202	2465.4	− 2531	−65.6	× 53 / 201	−17.3
Sum, rounded to a whole point						−42

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	50,219	2392.7	− 2432	−39.3	× 39 / 184	−8.3
4	50,222	2465.2	− 2473	−7.8	× 51 / 184	−2.2
5	50,223	2491.2	− 2502	−10.8	× 44 / 184	−2.6
6	50,226	2506.3	− 2531	−24.7	× 50 / 184	−6.7
Sum, rounded to a whole point						−20

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	50,408	2389.5	− 2432	−42.5	× 42 / 168	−10.6
4	50,409	2449.8	− 2473	−23.2	× 38 / 168	−5.2
5	50,410	2521.2	− 2502	19.2	× 47 / 168	5.4
6	50,411	2530.0	− 2531	−1	× 41 / 168	−0.2
Sum, rounded to a whole point						−11

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	50,310	2387.2	− 2432	−44.8	× 49 / 155	−14.2
4	50,311	2467.8	− 2473	−5.2	× 41 / 155	−1.4
5	50,312	2464.2	− 2502	−37.8	× 30 / 155	−7.3
6	50,313	2508.4	− 2531	−22.6	× 35 / 155	−5.1
Sum, rounded to a whole point						−28

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	50,270	2376.9	− 2432	−55.1	× 39 / 153	−14
4	50,271	2470.8	− 2473	−2.2	× 49 / 153	−0.7
5	50,272	2500.9	− 2502	−1.1	× 35 / 153	−0.3
6	50,273	2506.0	− 2531	−25	× 30 / 153	−4.9
Sum, rounded to a whole point						−20

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	50,125	2423.3	− 2432	−8.7	× 25 / 141	−1.5
4	50,126	2449.1	− 2473	−23.9	× 37 / 141	−6.3
5	50,127	2515.0	− 2502	13	× 46 / 141	4.2
6	50,128	2527.9	− 2531	−3.1	× 33 / 141	−0.7
Sum, rounded to a whole point						−4

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	49,881	2370.9	− 2432	−61.1	× 27 / 138	−12
4	49,882	2498.1	− 2473	25.1	× 25 / 138	4.5
5	49,883	2462.8	− 2502	−39.2	× 45 / 138	−12.8
6	49,884	2562.6	− 2531	31.6	× 41 / 138	9.4
Sum, rounded to a whole point						−11

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −46, −32, −42, −20, −11, −28, −20, −4, −11 → −23.8
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: 10 · 2017→2018: 22 · 2018→2019: 9 · 2019→2022: 17 · 2022→2023: 8 · 2023→2024: 16 · 2024→2025: 7 → average 12.9
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 12.9 × 2.66 = 34.3. Upper limit 10.5, lower limit −58.1.

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.