San Jose 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.

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	36,810	2397.8	− 2436	−38.2	× 58 / 349	−6.3
4	36,812	2437.5	− 2485	−47.5	× 46 / 349	−6.3
5	36,814	2472.5	− 2528	−55.5	× 48 / 349	−7.6
6	36,816	2463.0	− 2552	−89	× 63 / 349	−16.1
7	36,818	2503.3	− 2567	−63.7	× 72 / 349	−13.1
8	36,820	2488.6	− 2586	−97.4	× 62 / 349	−17.3
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	34,295	2374.4	− 2436	−61.6	× 54 / 336	−9.9
4	34,296	2431.3	− 2485	−53.7	× 58 / 336	−9.3
5	34,299	2470.9	− 2528	−57.1	× 48 / 336	−8.2
6	34,300	2475.3	− 2552	−76.7	× 47 / 336	−10.7
7	34,303	2527.3	− 2567	−39.7	× 58 / 336	−6.9
8	34,305	2515.4	− 2586	−70.6	× 71 / 336	−14.9
Sum, rounded to a whole point						−60

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	34,906	2359.4	− 2436	−76.6	× 53 / 316	−12.8
4	34,909	2430.3	− 2485	−54.7	× 57 / 316	−9.9
5	34,910	2470.2	− 2528	−57.8	× 53 / 316	−9.7
6	34,913	2489.3	− 2552	−62.7	× 49 / 316	−9.7
7	34,915	2500.2	− 2567	−66.8	× 49 / 316	−10.4
8	34,917	2502.7	− 2586	−83.3	× 55 / 316	−14.5
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	34,917	2387.8	− 2436	−48.2	× 42 / 290	−7
4	34,919	2407.1	− 2485	−77.9	× 54 / 290	−14.5
5	34,921	2452.4	− 2528	−75.6	× 56 / 290	−14.6
6	34,923	2499.9	− 2552	−52.1	× 51 / 290	−9.2
7	34,925	2496.7	− 2567	−70.3	× 50 / 290	−12.1
8	34,927	2500.9	− 2586	−85.1	× 37 / 290	−10.9
Sum, rounded to a whole point						−68

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	35,094	2422.4	− 2436	−13.6	× 49 / 326	−2
4	35,095	2436.1	− 2485	−48.9	× 47 / 326	−7.1
5	35,096	2426.3	− 2528	−101.7	× 60 / 326	−18.7
6	35,097	2492.2	− 2552	−59.8	× 65 / 326	−11.9
7	35,098	2522.9	− 2567	−44.1	× 56 / 326	−7.6
8	35,099	2495.2	− 2586	−90.8	× 49 / 326	−13.6
Sum, rounded to a whole point						−61

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	34,991	2364.7	− 2436	−71.3	× 57 / 317	−12.8
4	34,992	2432.1	− 2485	−52.9	× 48 / 317	−8
5	34,993	2411.5	− 2528	−116.5	× 55 / 317	−20.2
6	34,994	2476.5	− 2552	−75.5	× 48 / 317	−11.4
7	34,995	2495.2	− 2567	−71.8	× 55 / 317	−12.5
8	34,996	2462.8	− 2586	−123.2	× 54 / 317	−21
Sum, rounded to a whole point						−86

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	35,030	2354.3	− 2436	−81.7	× 57 / 310	−15
4	35,031	2432.6	− 2485	−52.4	× 60 / 310	−10.1
5	35,032	2419.0	− 2528	−109	× 42 / 310	−14.8
6	35,033	2428.0	− 2552	−124	× 48 / 310	−19.2
7	35,034	2534.4	− 2567	−32.6	× 47 / 310	−4.9
8	35,035	2467.8	− 2586	−118.2	× 56 / 310	−21.4
Sum, rounded to a whole point						−85

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	34,890	2318.7	− 2436	−117.3	× 53 / 322	−19.3
4	34,891	2413.7	− 2485	−71.3	× 56 / 322	−12.4
5	34,892	2428.4	− 2528	−99.6	× 69 / 322	−21.3
6	34,893	2458.4	− 2552	−93.6	× 46 / 322	−13.4
7	34,894	2481.0	− 2567	−86	× 51 / 322	−13.6
8	34,895	2499.3	− 2586	−86.7	× 47 / 322	−12.7
Sum, rounded to a whole point						−93

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	34,737	2323.4	− 2436	−112.6	× 42 / 289	−16.4
4	34,738	2377.5	− 2485	−107.5	× 46 / 289	−17.1
5	34,739	2433.3	− 2528	−94.7	× 52 / 289	−17
6	34,740	2449.3	− 2552	−102.7	× 61 / 289	−21.7
7	34,741	2489.7	− 2567	−77.3	× 44 / 289	−11.8
8	34,742	2478.8	− 2586	−107.2	× 44 / 289	−16.3
Sum, rounded to a whole point						−100

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −67, −60, −67, −68, −61, −86, −85, −93, −100 → −76.3
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 7 · 2016→2017: 7 · 2017→2018: 1 · 2018→2019: 7 · 2019→2022: 25 · 2022→2023: 1 · 2023→2024: 8 · 2024→2025: 7 → average 7.9
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 7.9 × 2.66 = 21. Upper limit −55.3, lower limit −97.3.

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. From 2014–15, 2015–16, 2016–17, 2017–18, 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25, 2025–26.