Heartwood Charter: 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 8.

3rd The average 3rd grader scores just under the grade 3 bar. 2427 vs. 2436.
4th The average 4th grader scores 23 points under the grade 4 bar. 2462 vs. 2485.
5th The average 5th grader scores just under the grade 4 bar. 2480 vs. 2485. The 5th-grade bar is 2528.
6th The average 6th grader scores just under the grade 5 bar. 2527 vs. 2528. The 6th-grade bar is 2552.
7th The average 7th grader scores 11 points under the grade 7 bar. 2556 vs. 2567.
8th The average 8th grader scores 11 points under the grade 7 bar. 2556 vs. 2567. The 8th-grade bar is 2586.

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.

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	89,071	2436.3	− 2436	0.3	× 15 / 75	0.1
4	89,072	2443.3	− 2485	−41.7	× 14 / 75	−7.8
5	89,073	2481.7	− 2528	−46.3	× 20 / 75	−12.3
6	89,074	2474.5	− 2552	−77.5	× 13 / 75	−13.4
7	89,075	2507.0	− 2567	−60	× 13 / 75	−10.4
Sum, rounded to a whole point						−44

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	91,247	2407.0	− 2436	−29	× 48 / 185	−7.5
4	91,248	2432.5	− 2485	−52.5	× 36 / 185	−10.2
5	91,249	2434.9	− 2528	−93.1	× 31 / 185	−15.6
6	91,250	2463.7	− 2552	−88.3	× 28 / 185	−13.4
7	91,251	2544.8	− 2567	−22.2	× 22 / 185	−2.6
8	91,252	2493.2	− 2586	−92.8	× 20 / 185	−10
Sum, rounded to a whole point						−59

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	91,141	2435.6	− 2436	−0.4	× 56 / 241	−0.1
4	91,142	2462.0	− 2485	−23	× 62 / 241	−5.9
5	91,143	2469.1	− 2528	−58.9	× 39 / 241	−9.5
6	91,144	2475.5	− 2552	−76.5	× 36 / 241	−11.4
7	91,145	2532.3	− 2567	−34.7	× 36 / 241	−5.2
8	91,146	2528.5	− 2586	−57.5	× 12 / 241	−2.9
Sum, rounded to a whole point						−35

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	91,092	2428.8	− 2436	−7.2	× 74 / 295	−1.8
4	91,093	2469.5	− 2485	−15.5	× 54 / 295	−2.8
5	91,094	2474.3	− 2528	−53.7	× 58 / 295	−10.6
6	91,095	2489.2	− 2552	−62.8	× 37 / 295	−7.9
7	91,096	2525.3	− 2567	−41.7	× 39 / 295	−5.5
8	91,097	2538.7	− 2586	−47.3	× 33 / 295	−5.3
Sum, rounded to a whole point						−34

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	90,788	2412.1	− 2436	−23.9	× 68 / 371	−4.4
4	90,789	2454.6	− 2485	−30.4	× 83 / 371	−6.8
5	90,790	2509.7	− 2528	−18.3	× 62 / 371	−3.1
6	90,791	2515.1	− 2552	−36.9	× 64 / 371	−6.4
7	90,792	2515.7	− 2567	−51.3	× 46 / 371	−6.4
8	90,793	2570.4	− 2586	−15.6	× 48 / 371	−2
Sum, rounded to a whole point						−29

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	90,447	2426.6	− 2436	−9.4	× 86 / 388	−2.1
4	90,448	2462.3	− 2485	−22.7	× 64 / 388	−3.7
5	90,449	2480.1	− 2528	−47.9	× 88 / 388	−10.9
6	90,450	2526.9	− 2552	−25.1	× 62 / 388	−4
7	90,451	2556.0	− 2567	−11	× 59 / 388	−1.7
8	90,452	2556.2	− 2586	−29.8	× 29 / 388	−2.2
Sum, rounded to a whole point						−25

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −44, −59, −35, −34, −29, −25 → −37.7
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2021→2022: 15 · 2022→2023: 24 · 2023→2024: 1 · 2024→2025: 5 · 2025→2026: 4 → average 9.8
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 9.8 × 2.66 = 26.1. Upper limit −11.6, lower limit −63.8.

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".

Step 3 · Free or reduced-price meals

The share of enrolled students eligible for free or reduced-price meals. From 2020–21, 2021–22, 2022–23, 2023–24, 2024–25, 2025–26.