Birney Tech 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.

Measured against the grade bars

The state's math test uses one scale for every grade, so a score means the same thing in grade 3 as in grade 5.

3rd The average 3rd grader scores 50 points under the grade 3 bar. 2386 vs. 2436.
4th The average 4th grader scores 11 points under the grade 3 bar. 2425 vs. 2436. The 4th-grade bar is 2485.
5th The average 5th grader scores just under the grade 4 bar. 2477 vs. 2485. The 5th-grade bar is 2528.

2026 results. "Meets standard" is the state's mark for being on track for that grade.

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	23,479	2407.7	− 2436	−28.3	× 72 / 242	−8.4
4	23,481	2395.9	− 2485	−89.1	× 88 / 242	−32.4
5	23,483	2417.2	− 2528	−110.8	× 82 / 242	−37.5
Sum, rounded to a whole point						−78

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	22,014	2413.6	− 2436	−22.4	× 66 / 237	−6.2
4	22,016	2423.7	− 2485	−61.3	× 79 / 237	−20.4
5	22,018	2403.8	− 2528	−124.2	× 92 / 237	−48.2
Sum, rounded to a whole point						−75

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	22,434	2401.1	− 2436	−34.9	× 82 / 230	−12.4
4	22,437	2434.9	− 2485	−50.1	× 75 / 230	−16.3
5	22,439	2450.8	− 2528	−77.2	× 73 / 230	−24.5
Sum, rounded to a whole point						−53

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	22,423	2409.3	− 2436	−26.7	× 70 / 239	−7.8
4	22,425	2425.6	− 2485	−59.4	× 89 / 239	−22.1
5	22,427	2453.8	− 2528	−74.2	× 80 / 239	−24.8
Sum, rounded to a whole point						−55

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	22,607	2372.9	− 2436	−63.1	× 75 / 238	−19.9
4	22,608	2454.8	− 2485	−30.2	× 72 / 238	−9.1
5	22,609	2446.1	− 2528	−81.9	× 91 / 238	−31.3
Sum, rounded to a whole point						−60

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	22,572	2391.4	− 2436	−44.6	× 44 / 162	−12.1
4	22,573	2428.2	− 2485	−56.8	× 44 / 162	−15.4
5	22,574	2464.3	− 2528	−63.7	× 74 / 162	−29.1
Sum, rounded to a whole point						−57

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	22,539	2398.6	− 2436	−37.4	× 54 / 145	−13.9
4	22,540	2463.4	− 2485	−21.6	× 44 / 145	−6.6
5	22,541	2452.7	− 2528	−75.3	× 47 / 145	−24.4
Sum, rounded to a whole point						−45

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	22,393	2395.3	− 2436	−40.7	× 55 / 151	−14.8
4	22,394	2449.9	− 2485	−35.1	× 51 / 151	−11.9
5	22,395	2500.4	− 2528	−27.6	× 45 / 151	−8.2
Sum, rounded to a whole point						−35

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	22,304	2387.6	− 2436	−48.4	× 52 / 154	−16.3
4	22,305	2444.2	− 2485	−40.8	× 50 / 154	−13.2
5	22,306	2481.2	− 2528	−46.8	× 52 / 154	−15.8
Sum, rounded to a whole point						−45

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	22,360	2386.0	− 2436	−50	× 60 / 165	−18.2
4	22,361	2424.8	− 2485	−60.2	× 54 / 165	−19.7
5	22,362	2476.9	− 2528	−51.1	× 51 / 165	−15.8
Sum, rounded to a whole point						−54

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −78, −75, −53, −55, −60, −57, −45, −35, −45, −54 → −55.7
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 3 · 2016→2017: 22 · 2017→2018: 2 · 2018→2019: 5 · 2019→2022: 3 · 2022→2023: 12 · 2023→2024: 10 · 2024→2025: 10 · 2025→2026: 9 → average 8.4
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 8.4 × 2.66 = 22.3. Upper limit −33.4, lower limit −78.

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.