Vista La Mesa 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	72,489	2391.0	− 2436	−45	× 81 / 406	−9
4	72,491	2433.5	− 2485	−51.5	× 64 / 406	−8.1
5	72,493	2451.4	− 2528	−76.6	× 83 / 406	−15.7
6	72,495	2493.2	− 2552	−58.8	× 57 / 406	−8.3
7	72,497	2484.0	− 2567	−83	× 61 / 406	−12.5
8	72,499	2518.1	− 2586	−67.9	× 60 / 406	−10
Sum, rounded to a whole point						−64

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	67,280	2428.1	− 2436	−7.9	× 63 / 382	−1.3
4	67,282	2450.0	− 2485	−35	× 75 / 382	−6.9
5	67,284	2452.2	− 2528	−75.8	× 60 / 382	−11.9
6	67,287	2509.1	− 2552	−42.9	× 74 / 382	−8.3
7	67,288	2479.9	− 2567	−87.1	× 54 / 382	−12.3
8	67,291	2489.8	− 2586	−96.2	× 56 / 382	−14.1
Sum, rounded to a whole point						−55

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	69,080	2442.8	− 2436	6.8	× 53 / 362	1
4	69,081	2441.2	− 2485	−43.8	× 50 / 362	−6
5	69,084	2459.0	− 2528	−69	× 72 / 362	−13.7
6	69,086	2493.5	− 2552	−58.5	× 63 / 362	−10.2
7	69,088	2523.4	− 2567	−43.6	× 71 / 362	−8.6
8	69,089	2515.3	− 2586	−70.7	× 53 / 362	−10.4
Sum, rounded to a whole point						−48

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	69,251	2424.7	− 2436	−11.3	× 55 / 370	−1.7
4	69,253	2446.1	− 2485	−38.9	× 59 / 370	−6.2
5	69,255	2469.6	− 2528	−58.4	× 51 / 370	−8
6	69,257	2518.3	− 2552	−33.7	× 72 / 370	−6.6
7	69,259	2510.1	− 2567	−56.9	× 66 / 370	−10.1
8	69,261	2551.4	− 2586	−34.6	× 67 / 370	−6.3
Sum, rounded to a whole point						−39

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	69,789	2417.4	− 2436	−18.6	× 78 / 376	−3.9
4	69,790	2454.7	− 2485	−30.3	× 52 / 376	−4.2
5	69,791	2454.9	− 2528	−73.1	× 56 / 376	−10.9
6	69,792	2527.2	− 2552	−24.8	× 57 / 376	−3.8
7	69,793	2502.7	− 2567	−64.3	× 69 / 376	−11.8
8	69,794	2522.6	− 2586	−63.4	× 64 / 376	−10.8
Sum, rounded to a whole point						−45

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	69,889	2360.1	− 2436	−75.9	× 60 / 380	−12
4	69,890	2430.0	− 2485	−55	× 56 / 380	−8.1
5	69,891	2461.5	− 2528	−66.5	× 77 / 380	−13.5
6	69,892	2515.0	− 2552	−37	× 79 / 380	−7.7
7	69,893	2461.9	− 2567	−105.1	× 52 / 380	−14.4
8	69,894	2468.1	− 2586	−117.9	× 56 / 380	−17.4
Sum, rounded to a whole point						−73

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	69,905	2386.4	− 2436	−49.6	× 56 / 376	−7.4
4	69,906	2437.7	− 2485	−47.3	× 57 / 376	−7.2
5	69,907	2445.8	− 2528	−82.2	× 59 / 376	−12.9
6	69,908	2533.8	− 2552	−18.2	× 70 / 376	−3.4
7	69,909	2521.4	− 2567	−45.6	× 77 / 376	−9.3
8	69,910	2461.1	− 2586	−124.9	× 57 / 376	−18.9
Sum, rounded to a whole point						−59

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	69,891	2400.2	− 2436	−35.8	× 54 / 340	−5.7
4	69,892	2454.9	− 2485	−30.1	× 51 / 340	−4.5
5	69,893	2439.2	− 2528	−88.8	× 53 / 340	−13.8
6	69,894	2508.3	− 2552	−43.7	× 57 / 340	−7.3
7	69,895	2517.5	− 2567	−49.5	× 55 / 340	−8
8	69,896	2552.6	− 2586	−33.4	× 70 / 340	−6.9
Sum, rounded to a whole point						−46

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	69,605	2386.7	− 2436	−49.3	× 58 / 336	−8.5
4	69,606	2457.8	− 2485	−27.2	× 57 / 336	−4.6
5	69,607	2428.0	− 2528	−100	× 58 / 336	−17.3
6	69,608	2506.1	− 2552	−45.9	× 52 / 336	−7.1
7	69,609	2518.2	− 2567	−48.8	× 53 / 336	−7.7
8	69,610	2501.6	− 2586	−84.4	× 58 / 336	−14.6
Sum, rounded to a whole point						−60

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −64, −55, −48, −39, −45, −73, −59, −46, −60 → −54.3
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 9 · 2016→2017: 7 · 2017→2018: 9 · 2018→2019: 6 · 2019→2022: 28 · 2022→2023: 14 · 2023→2024: 13 · 2024→2025: 14 → 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 −21, lower limit −87.6.

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.