Heartland 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 11.

3rd The average 3rd grader scores 43 points under the grade 3 bar. 2393 vs. 2436.
4th The average 4th grader scores 46 points under the grade 4 bar. 2439 vs. 2485.
5th The average 5th grader scores 32 points under the grade 4 bar. 2453 vs. 2485. The 5th-grade bar is 2528.
6th The average 6th grader scores just under the grade 4 bar. 2484 vs. 2485. The 6th-grade bar is 2552.
7th The average 7th grader scores just under the grade 5 bar. 2520 vs. 2528. The 7th-grade bar is 2567.
8th The average 8th grader scores 24 points under the grade 6 bar. 2529 vs. 2552. The 8th-grade bar is 2586.
11th The average 11th grader scores 36 points under the grade 11 bar. 2592 vs. 2628.

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.

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,994	2367.9	− 2436	−68.1	× 263 / 1488	−12
4	16,995	2402.4	− 2485	−82.6	× 248 / 1488	−13.8
5	16,996	2428.9	− 2528	−99.1	× 225 / 1488	−15
6	16,997	2440.6	− 2552	−111.4	× 250 / 1488	−18.7
7	16,998	2487.0	− 2567	−80	× 227 / 1488	−12.2
8	16,999	2474.7	− 2586	−111.3	× 181 / 1488	−13.5
11	17,000	2511.3	− 2628	−116.7	× 94 / 1488	−7.4
Sum, rounded to a whole point						−93

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,586	2393.8	− 2436	−42.2	× 381 / 2290	−7
4	16,587	2424.0	− 2485	−61	× 388 / 2290	−10.3
5	16,588	2437.8	− 2528	−90.2	× 379 / 2290	−14.9
6	16,589	2466.5	− 2552	−85.5	× 343 / 2290	−12.8
7	16,590	2492.9	− 2567	−74.1	× 319 / 2290	−10.3
8	16,591	2493.6	− 2586	−92.4	× 315 / 2290	−12.7
11	16,592	2551.4	− 2628	−76.6	× 165 / 2290	−5.5
Sum, rounded to a whole point						−74

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	17,038	2404.2	− 2436	−31.8	× 409 / 2265	−5.7
4	17,039	2436.6	− 2485	−48.4	× 367 / 2265	−7.8
5	17,040	2448.5	− 2528	−79.5	× 365 / 2265	−12.8
6	17,041	2457.7	− 2552	−94.3	× 347 / 2265	−14.4
7	17,042	2501.9	− 2567	−65.1	× 332 / 2265	−9.5
8	17,043	2504.3	− 2586	−81.7	× 304 / 2265	−11
11	17,044	2525.6	− 2628	−102.4	× 141 / 2265	−6.4
Sum, rounded to a whole point						−68

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,972	2407.4	− 2436	−28.6	× 403 / 2413	−4.8
4	16,973	2439.3	− 2485	−45.7	× 422 / 2413	−8
5	16,974	2445.3	− 2528	−82.7	× 367 / 2413	−12.6
6	16,975	2475.3	− 2552	−76.7	× 382 / 2413	−12.1
7	16,976	2487.5	− 2567	−79.5	× 348 / 2413	−11.5
8	16,977	2507.0	− 2586	−79	× 327 / 2413	−10.7
11	16,978	2540.3	− 2628	−87.7	× 164 / 2413	−6
Sum, rounded to a whole point						−66

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,929	2396.5	− 2436	−39.5	× 521 / 2837	−7.3
4	16,930	2429.4	− 2485	−55.6	× 470 / 2837	−9.2
5	16,931	2446.0	− 2528	−82	× 472 / 2837	−13.6
6	16,932	2471.0	− 2552	−81	× 427 / 2837	−12.2
7	16,933	2501.4	− 2567	−65.6	× 413 / 2837	−9.5
8	16,934	2490.9	− 2586	−95.1	× 370 / 2837	−12.4
11	16,935	2545.0	− 2628	−83	× 164 / 2837	−4.8
Sum, rounded to a whole point						−69

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,914	2400.0	− 2436	−36	× 525 / 3069	−6.2
4	16,915	2434.3	− 2485	−50.7	× 554 / 3069	−9.2
5	16,916	2447.9	− 2528	−80.1	× 486 / 3069	−12.7
6	16,917	2478.2	− 2552	−73.8	× 486 / 3069	−11.7
7	16,918	2505.3	− 2567	−61.7	× 441 / 3069	−8.9
8	16,919	2514.0	− 2586	−72	× 397 / 3069	−9.3
11	16,920	2572.2	− 2628	−55.8	× 180 / 3069	−3.3
Sum, rounded to a whole point						−61

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	16,923	2393.2	− 2436	−42.8	× 603 / 3459	−7.5
4	16,924	2438.6	− 2485	−46.4	× 571 / 3459	−7.7
5	16,925	2453.1	− 2528	−74.9	× 580 / 3459	−12.6
6	16,926	2483.9	− 2552	−68.1	× 540 / 3459	−10.6
7	16,927	2520.3	− 2567	−46.7	× 520 / 3459	−7
8	16,928	2528.5	− 2586	−57.5	× 453 / 3459	−7.5
11	16,929	2592.0	− 2628	−36	× 192 / 3459	−2
Sum, rounded to a whole point						−55

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −93, −74, −68, −66, −69, −61, −55 → −69.4
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2019→2021: 19 · 2021→2022: 6 · 2022→2023: 2 · 2023→2024: 3 · 2024→2025: 8 · 2025→2026: 6 → average 7.3
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 7.3 × 2.66 = 19.4. Upper limit −50, lower limit −88.8.

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".

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 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25, 2025–26.