Bayside Martin Luther King Jr. 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	42,639	2379.1	− 2436	−56.9	× 18 / 69	−14.8
4	42,642	2469.4	− 2485	−15.6	× 15 / 69	−3.4
5	42,643	2535.2	− 2528	7.2	× 13 / 69	1.4
6	42,646	2432.8	− 2552	−119.2	× 13 / 69	−22.5
8	42,650	2421.2	− 2586	−164.8	× 10 / 69	−23.9
Sum, rounded to a whole point						−63

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	39,380	2369.6	− 2436	−66.4	× 12 / 53	−15
4	39,382	2434.6	− 2485	−50.4	× 19 / 53	−18.1
5	39,383	2507.4	− 2528	−20.6	× 8 / 53	−3.1
6	39,385	2531.4	− 2552	−20.6	× 14 / 53	−5.4
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	40,394	2373.8	− 2436	−62.2	× 17 / 69	−15.3
5	40,399	2451.2	− 2528	−76.8	× 13 / 69	−14.5
6	40,401	2422.4	− 2552	−129.6	× 12 / 69	−22.5
7	40,402	2506.0	− 2567	−61	× 14 / 69	−12.4
8	40,404	2468.8	− 2586	−117.2	× 13 / 69	−22.1
Sum, rounded to a whole point						−87

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	40,411	2380.5	− 2436	−55.5	× 16 / 42	−21.1
4	40,414	2459.6	− 2485	−25.4	× 15 / 42	−9.1
8	40,422	2520.0	− 2586	−66	× 11 / 42	−17.3
Sum, rounded to a whole point						−47

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
4	40,561	2420.9	− 2485	−64.1	× 13 / 37	−22.5
5	40,562	2466.3	− 2528	−61.7	× 13 / 37	−21.7
7	40,564	2493.4	− 2567	−73.6	× 11 / 37	−21.9
Sum, rounded to a whole point						−66

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	39,497	2373.7	− 2436	−62.3	× 13 / 38	−21.3
4	39,498	2381.8	− 2485	−103.2	× 11 / 38	−29.9
6	39,500	2392.6	− 2552	−159.4	× 14 / 38	−58.7
Sum, rounded to a whole point						−110

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	40,335	2406.0	− 2436	−30	× 46 / 249	−5.5
4	40,336	2479.7	− 2485	−5.3	× 32 / 249	−0.7
5	40,337	2448.1	− 2528	−79.9	× 44 / 249	−14.1
6	40,338	2461.6	− 2552	−90.4	× 39 / 249	−14.2
7	40,339	2485.0	− 2567	−82	× 42 / 249	−13.8
8	40,340	2507.9	− 2586	−78.1	× 46 / 249	−14.4
Sum, rounded to a whole point						−63

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	40,382	2431.1	− 2436	−4.9	× 35 / 198	−0.9
4	40,383	2488.6	− 2485	3.6	× 38 / 198	0.7
5	40,384	2542.3	− 2528	14.3	× 24 / 198	1.7
6	40,385	2431.5	− 2552	−120.5	× 36 / 198	−21.9
7	40,386	2513.4	− 2567	−53.6	× 31 / 198	−8.4
8	40,387	2499.9	− 2586	−86.1	× 34 / 198	−14.8
Sum, rounded to a whole point						−44

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	40,203	2452.7	− 2436	16.7	× 33 / 171	3.2
4	40,204	2474.5	− 2485	−10.5	× 34 / 171	−2.1
5	40,205	2568.0	− 2528	40	× 34 / 171	8
6	40,206	2463.7	− 2552	−88.3	× 27 / 171	−13.9
7	40,207	2418.7	− 2567	−148.3	× 20 / 171	−17.3
8	40,208	2476.2	− 2586	−109.8	× 23 / 171	−14.8
Sum, rounded to a whole point						−37

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	39,984	2441.6	− 2436	5.6	× 24 / 162	0.8
4	39,985	2485.3	− 2485	0.3	× 32 / 162	0.1
5	39,986	2546.0	− 2528	18	× 32 / 162	3.6
6	39,987	2558.7	− 2552	6.7	× 32 / 162	1.3
7	39,988	2491.4	− 2567	−75.6	× 19 / 162	−8.9
8	39,989	2474.6	− 2586	−111.4	× 23 / 162	−15.8
Sum, rounded to a whole point						−19

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −63, −42, −87, −47, −66, −110, −63, −44, −37, −19 → −57.8
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 21 · 2016→2017: 45 · 2017→2018: 40 · 2018→2019: 19 · 2019→2021: 44 · 2021→2022: 47 · 2022→2023: 19 · 2023→2024: 7 · 2024→2025: 18 → average 28.9
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 28.9 × 2.66 = 76.9. Upper limit 19.1, lower limit −134.7.

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.