Rocketship Si Se Puede 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	85,767	2439.5	− 2436	3.5	× 117 / 252	1.6
4	85,770	2476.6	− 2485	−8.4	× 101 / 252	−3.4
5	85,771	2487.5	− 2528	−40.5	× 34 / 252	−5.5
Sum, rounded to a whole point						−7

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	79,588	2452.5	− 2436	16.5	× 102 / 249	6.8
4	79,591	2483.1	− 2485	−1.9	× 108 / 249	−0.8
5	79,593	2476.1	− 2528	−51.9	× 39 / 249	−8.1
Sum, rounded to a whole point						−2

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	81,766	2434.8	− 2436	−1.2	× 97 / 203	−0.6
4	81,768	2497.1	− 2485	12.1	× 91 / 203	5.4
5	81,770	2490.0	− 2528	−38	× 15 / 203	−2.8
Sum, rounded to a whole point						2

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	81,952	2470.5	− 2436	34.5	× 76 / 187	14
4	81,955	2467.4	− 2485	−17.6	× 94 / 187	−8.8
5	81,956	2478.6	− 2528	−49.4	× 17 / 187	−4.5
Sum, rounded to a whole point						1

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	82,573	2461.9	− 2436	25.9	× 78 / 170	11.9
4	82,574	2505.0	− 2485	20	× 68 / 170	8
5	82,575	2494.4	− 2528	−33.6	× 24 / 170	−4.7
Sum, rounded to a whole point						15

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	82,756	2389.1	− 2436	−46.9	× 50 / 156	−15
4	82,757	2438.7	− 2485	−46.3	× 70 / 156	−20.8
5	82,758	2468.1	− 2528	−59.9	× 36 / 156	−13.8
Sum, rounded to a whole point						−50

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	82,730	2398.5	− 2436	−37.5	× 55 / 132	−15.6
4	82,731	2426.4	− 2485	−58.6	× 51 / 132	−22.6
5	82,732	2459.5	− 2528	−68.5	× 26 / 132	−13.5
Sum, rounded to a whole point						−52

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	82,740	2407.2	− 2436	−28.8	× 42 / 121	−10
4	82,741	2439.1	− 2485	−45.9	× 53 / 121	−20.1
5	82,742	2458.8	− 2528	−69.2	× 26 / 121	−14.9
Sum, rounded to a whole point						−45

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	82,418	2405.1	− 2436	−30.9	× 37 / 93	−12.3
4	82,419	2453.4	− 2485	−31.6	× 39 / 93	−13.3
5	82,420	2476.9	− 2528	−51.1	× 17 / 93	−9.3
Sum, rounded to a whole point						−35

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −7, −2, 2, 1, 15, −50, −52, −45, −35 → −19.2
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 5 · 2016→2017: 4 · 2017→2018: 1 · 2018→2019: 14 · 2019→2022: 65 · 2022→2023: 2 · 2023→2024: 7 · 2024→2025: 10 → average 13.5
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 13.5 × 2.66 = 35.9. Upper limit 16.7, lower limit −55.1.

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.