Loma Vista Immersion Academy: 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	94,610	2395.0	− 2436	−41	× 46 / 96	−19.6
4	94,613	2446.9	− 2485	−38.1	× 18 / 96	−7.1
5	94,614	2446.8	− 2528	−81.2	× 18 / 96	−15.2
6	94,617	2459.1	− 2552	−92.9	× 14 / 96	−13.5
Sum, rounded to a whole point						−56

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	87,854	2399.9	− 2436	−36.1	× 35 / 108	−11.7
4	87,855	2439.0	− 2485	−46	× 43 / 108	−18.3
5	87,857	2495.1	− 2528	−32.9	× 15 / 108	−4.6
6	87,859	2496.9	− 2552	−55.1	× 15 / 108	−7.7
Sum, rounded to a whole point						−42

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	90,382	2422.6	− 2436	−13.4	× 37 / 131	−3.8
4	90,384	2438.0	− 2485	−47	× 34 / 131	−12.2
5	90,386	2481.8	− 2528	−46.2	× 46 / 131	−16.2
6	90,389	2542.4	− 2552	−9.6	× 14 / 131	−1
Sum, rounded to a whole point						−33

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	90,582	2438.0	− 2436	2	× 48 / 158	0.6
4	90,583	2495.2	− 2485	10.2	× 36 / 158	2.3
5	90,586	2496.9	− 2528	−31.1	× 34 / 158	−6.7
6	90,587	2509.3	− 2552	−42.7	× 40 / 158	−10.8
Sum, rounded to a whole point						−15

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	91,212	2439.1	− 2436	3.1	× 45 / 155	0.9
4	91,213	2478.1	− 2485	−6.9	× 43 / 155	−1.9
5	91,214	2539.1	− 2528	11.1	× 35 / 155	2.5
6	91,215	2518.9	− 2552	−33.1	× 32 / 155	−6.8
Sum, rounded to a whole point						−5

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	91,466	2388.0	− 2436	−48	× 59 / 197	−14.4
4	91,467	2464.2	− 2485	−20.8	× 48 / 197	−5.1
5	91,468	2500.0	− 2528	−28	× 57 / 197	−8.1
6	91,469	2519.7	− 2552	−32.3	× 33 / 197	−5.4
Sum, rounded to a whole point						−33

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	91,354	2429.8	− 2436	−6.2	× 64 / 203	−2
4	91,355	2441.6	− 2485	−43.4	× 50 / 203	−10.7
5	91,356	2493.4	− 2528	−34.6	× 42 / 203	−7.2
6	91,357	2507.7	− 2552	−44.3	× 47 / 203	−10.3
Sum, rounded to a whole point						−30

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	91,301	2415.7	− 2436	−20.3	× 62 / 192	−6.6
4	91,302	2464.8	− 2485	−20.2	× 51 / 192	−5.4
5	91,303	2450.6	− 2528	−77.4	× 45 / 192	−18.1
6	91,304	2521.2	− 2552	−30.8	× 34 / 192	−5.5
Sum, rounded to a whole point						−36

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	91,005	2423.4	− 2436	−12.6	× 66 / 212	−3.9
4	91,006	2470.6	− 2485	−14.4	× 54 / 212	−3.7
5	91,007	2512.2	− 2528	−15.8	× 51 / 212	−3.8
6	91,008	2488.7	− 2552	−63.3	× 41 / 212	−12.2
Sum, rounded to a whole point						−24

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −56, −42, −33, −15, −5, −33, −30, −36, −24 → −30.4
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: 9 · 2017→2018: 18 · 2018→2019: 10 · 2019→2022: 28 · 2022→2023: 3 · 2023→2024: 6 · 2024→2025: 12 → average 12.5
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 12.5 × 2.66 = 33.3. Upper limit 2.9, lower limit −63.7.

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.