Enterprise 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	22,964	2384.0	− 2436	−52	× 89 / 413	−11.2
4	22,967	2389.4	− 2485	−95.6	× 111 / 413	−25.7
5	22,968	2414.2	− 2528	−113.8	× 113 / 413	−31.1
6	22,971	2438.8	− 2552	−113.2	× 100 / 413	−27.4
Sum, rounded to a whole point						−95

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	21,564	2394.1	− 2436	−41.9	× 77 / 414	−7.8
4	21,566	2406.5	− 2485	−78.5	× 117 / 414	−22.2
5	21,567	2419.3	− 2528	−108.7	× 104 / 414	−27.3
6	21,569	2447.3	− 2552	−104.7	× 116 / 414	−29.3
Sum, rounded to a whole point						−87

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	21,981	2389.2	− 2436	−46.8	× 102 / 404	−11.8
4	21,983	2427.8	− 2485	−57.2	× 93 / 404	−13.2
5	21,984	2429.0	− 2528	−99	× 108 / 404	−26.5
6	21,987	2432.1	− 2552	−119.9	× 101 / 404	−30
Sum, rounded to a whole point						−81

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	21,966	2382.3	− 2436	−53.7	× 99 / 396	−13.4
4	21,968	2456.8	− 2485	−28.2	× 98 / 396	−7
5	21,970	2432.5	− 2528	−95.5	× 93 / 396	−22.4
6	21,972	2411.1	− 2552	−140.9	× 106 / 396	−37.7
Sum, rounded to a whole point						−81

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	22,144	2391.4	− 2436	−44.6	× 101 / 371	−12.1
4	22,145	2434.4	− 2485	−50.6	× 101 / 371	−13.8
5	22,146	2472.7	− 2528	−55.3	× 93 / 371	−13.9
6	22,147	2446.0	− 2552	−106	× 76 / 371	−21.7
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	22,117	2349.9	− 2436	−86.1	× 93 / 379	−21.1
4	22,118	2369.9	− 2485	−115.1	× 87 / 379	−26.4
5	22,119	2379.6	− 2528	−148.4	× 89 / 379	−34.8
6	22,120	2418.3	− 2552	−133.7	× 89 / 379	−31.4
8	22,122	2396.8	− 2586	−189.2	× 21 / 379	−10.5
Sum, rounded to a whole point						−124

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	22,090	2356.8	− 2436	−79.2	× 97 / 335	−22.9
4	22,091	2358.7	− 2485	−126.3	× 75 / 335	−28.3
5	22,092	2388.4	− 2528	−139.6	× 81 / 335	−33.8
6	22,093	2417.8	− 2552	−134.2	× 82 / 335	−32.8
Sum, rounded to a whole point						−118

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	21,944	2368.5	− 2436	−67.5	× 77 / 323	−16.1
4	21,945	2370.8	− 2485	−114.2	× 85 / 323	−30.1
5	21,946	2389.7	− 2528	−138.3	× 78 / 323	−33.4
6	21,947	2429.4	− 2552	−122.6	× 83 / 323	−31.5
Sum, rounded to a whole point						−111

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	21,855	2370.9	− 2436	−65.1	× 119 / 348	−22.3
4	21,856	2402.9	− 2485	−82.1	× 73 / 348	−17.2
5	21,857	2394.4	− 2528	−133.6	× 79 / 348	−30.3
6	21,858	2418.2	− 2552	−133.8	× 77 / 348	−29.6
Sum, rounded to a whole point						−99

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −95, −87, −81, −81, −61, −124, −118, −111, −99 → −95.2
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 8 · 2016→2017: 6 · 2017→2018: 0 · 2018→2019: 20 · 2019→2022: 63 · 2022→2023: 6 · 2023→2024: 7 · 2024→2025: 12 → average 15.3
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 15.3 × 2.66 = 40.7. Upper limit −54.5, lower limit −135.9.

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.