Bayside Steam 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	75,857	2376.2	− 2436	−59.8	× 70 / 292	−14.3
4	75,859	2408.8	− 2485	−76.2	× 79 / 292	−20.6
5	75,861	2422.7	− 2528	−105.3	× 69 / 292	−24.9
6	75,863	2437.3	− 2552	−114.7	× 74 / 292	−29.1
Sum, rounded to a whole point						−89

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	70,349	2414.4	− 2436	−21.6	× 76 / 296	−5.5
4	70,350	2409.2	− 2485	−75.8	× 72 / 296	−18.4
5	70,352	2414.9	− 2528	−113.1	× 73 / 296	−27.9
6	70,355	2437.3	− 2552	−114.7	× 75 / 296	−29.1
Sum, rounded to a whole point						−81

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	72,212	2406.7	− 2436	−29.3	× 63 / 272	−6.8
4	72,213	2420.7	− 2485	−64.3	× 74 / 272	−17.5
5	72,216	2420.1	− 2528	−107.9	× 68 / 272	−27
6	72,217	2423.2	− 2552	−128.8	× 67 / 272	−31.7
Sum, rounded to a whole point						−83

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	72,351	2388.7	− 2436	−47.3	× 74 / 284	−12.3
4	72,353	2420.7	− 2485	−64.3	× 64 / 284	−14.5
5	72,355	2439.1	− 2528	−88.9	× 78 / 284	−24.4
6	72,357	2427.6	− 2552	−124.4	× 68 / 284	−29.8
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	72,851	2407.4	− 2436	−28.6	× 63 / 285	−6.3
4	72,852	2420.4	− 2485	−64.6	× 79 / 285	−17.9
5	72,853	2449.2	− 2528	−78.8	× 62 / 285	−17.1
6	72,854	2422.6	− 2552	−129.4	× 81 / 285	−36.8
Sum, rounded to a whole point						−78

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	71,338	2362.2	− 2436	−73.8	× 62 / 230	−19.9
4	71,339	2386.2	− 2485	−98.8	× 63 / 230	−27.1
5	71,340	2410.5	− 2528	−117.5	× 50 / 230	−25.5
6	71,341	2420.2	− 2552	−131.8	× 55 / 230	−31.5
Sum, rounded to a whole point						−104

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	72,941	2392.9	− 2436	−43.1	× 66 / 239	−11.9
4	72,942	2406.5	− 2485	−78.5	× 53 / 239	−17.4
5	72,943	2449.0	− 2528	−79	× 65 / 239	−21.5
6	72,944	2427.0	− 2552	−125	× 55 / 239	−28.8
Sum, rounded to a whole point						−80

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	72,935	2417.1	− 2436	−18.9	× 41 / 217	−3.6
4	72,936	2422.4	− 2485	−62.6	× 60 / 217	−17.3
5	72,937	2434.1	− 2528	−93.9	× 54 / 217	−23.4
6	72,938	2463.5	− 2552	−88.5	× 62 / 217	−25.3
Sum, rounded to a whole point						−70

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	72,925	2414.3	− 2436	−21.7	× 61 / 208	−6.4
4	72,926	2456.7	− 2485	−28.3	× 33 / 208	−4.5
5	72,927	2402.3	− 2528	−125.7	× 59 / 208	−35.7
6	72,928	2423.0	− 2552	−129	× 55 / 208	−34.1
Sum, rounded to a whole point						−81

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	72,621	2398.0	− 2436	−38	× 53 / 191	−10.5
4	72,622	2438.1	− 2485	−46.9	× 55 / 191	−13.5
5	72,623	2456.4	− 2528	−71.6	× 29 / 191	−10.9
6	72,624	2446.5	− 2552	−105.5	× 54 / 191	−29.8
Sum, rounded to a whole point						−65

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −89, −81, −83, −81, −78, −104, −80, −70, −81, −65 → −81.2
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: 2 · 2017→2018: 2 · 2018→2019: 3 · 2019→2021: 26 · 2021→2022: 24 · 2022→2023: 10 · 2023→2024: 11 · 2024→2025: 16 → average 11.3
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 11.3 × 2.66 = 30.1. Upper limit −51.1, lower limit −111.3.

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.