Hart-Ransom Academic Charter: english

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	96,798	2401.1	− 2432	−30.9	× 31 / 161	−5.9
4	96,801	2435.3	− 2473	−37.7	× 29 / 161	−6.8
5	96,802	2476.3	− 2502	−25.7	× 17 / 161	−2.7
6	96,805	2524.4	− 2531	−6.6	× 25 / 161	−1
7	96,806	2567.6	− 2552	15.6	× 34 / 161	3.3
8	96,809	2558.2	− 2567	−8.8	× 25 / 161	−1.4
Sum, rounded to a whole point						−15

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	89,760	2425.1	− 2432	−6.9	× 21 / 193	−0.8
4	89,762	2457.4	− 2473	−15.6	× 31 / 193	−2.5
5	89,764	2485.2	− 2502	−16.8	× 33 / 193	−2.9
6	89,767	2460.1	− 2531	−70.9	× 18 / 193	−6.6
7	89,768	2546.4	− 2552	−5.6	× 32 / 193	−0.9
8	89,771	2575.4	− 2567	8.4	× 38 / 193	1.7
11	89,772	2576.5	− 2583	−6.5	× 20 / 193	−0.7
Sum, rounded to a whole point						−13

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	92,388	2404.4	− 2432	−27.6	× 34 / 202	−4.6
4	92,390	2463.4	− 2473	−9.6	× 28 / 202	−1.3
5	92,393	2479.3	− 2502	−22.7	× 32 / 202	−3.6
6	92,395	2512.1	− 2531	−18.9	× 35 / 202	−3.3
7	92,396	2543.1	− 2552	−8.9	× 22 / 202	−1
8	92,398	2608.1	− 2567	41.1	× 32 / 202	6.5
11	92,401	2639.6	− 2583	56.6	× 19 / 202	5.3
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	92,587	2418.0	− 2432	−14	× 28 / 207	−1.9
4	92,590	2458.9	− 2473	−14.1	× 30 / 207	−2
5	92,591	2489.6	− 2502	−12.4	× 32 / 207	−1.9
6	92,594	2527.7	− 2531	−3.3	× 35 / 207	−0.6
7	92,595	2561.1	− 2552	9.1	× 33 / 207	1.5
8	92,598	2566.3	− 2567	−0.7	× 26 / 207	−0.1
11	92,599	2626.3	− 2583	43.3	× 23 / 207	4.8
Sum, rounded to a whole point						0

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,218	2397.1	− 2432	−34.9	× 14 / 181	−2.7
4	93,219	2486.8	− 2473	13.8	× 26 / 181	2
5	93,220	2514.4	− 2502	12.4	× 33 / 181	2.3
6	93,221	2535.1	− 2531	4.1	× 29 / 181	0.7
7	93,222	2596.0	− 2552	44	× 31 / 181	7.5
8	93,223	2595.5	− 2567	28.5	× 30 / 181	4.7
11	93,224	2652.1	− 2583	69.1	× 18 / 181	6.9
Sum, rounded to a whole point						21

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	91,233	2426.5	− 2432	−5.5	× 26 / 222	−0.6
4	91,234	2480.1	− 2473	7.1	× 41 / 222	1.3
5	91,235	2508.6	− 2502	6.6	× 25 / 222	0.7
6	91,236	2558.4	− 2531	27.4	× 39 / 222	4.8
7	91,237	2576.4	− 2552	24.4	× 36 / 222	4
8	91,238	2613.8	− 2567	46.8	× 30 / 222	6.3
11	91,239	2645.4	− 2583	62.4	× 25 / 222	7
Sum, rounded to a whole point						24

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,449	2412.8	− 2432	−19.2	× 19 / 213	−1.7
4	93,450	2464.1	− 2473	−8.9	× 32 / 213	−1.3
5	93,451	2516.8	− 2502	14.8	× 39 / 213	2.7
6	93,452	2539.8	− 2531	8.8	× 25 / 213	1
7	93,453	2581.2	− 2552	29.2	× 33 / 213	4.5
8	93,454	2599.9	− 2567	32.9	× 44 / 213	6.8
11	93,455	2634.9	− 2583	51.9	× 21 / 213	5.1
Sum, rounded to a whole point						17

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,345	2415.6	− 2432	−16.4	× 37 / 223	−2.7
4	93,346	2436.9	− 2473	−36.1	× 21 / 223	−3.4
5	93,347	2477.4	− 2502	−24.6	× 33 / 223	−3.6
6	93,348	2547.3	− 2531	16.3	× 38 / 223	2.8
7	93,349	2557.1	− 2552	5.1	× 32 / 223	0.7
8	93,350	2606.3	− 2567	39.3	× 26 / 223	4.6
11	93,351	2658.6	− 2583	75.6	× 36 / 223	12.2
Sum, rounded to a whole point						11

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,232	2408.7	− 2432	−23.3	× 29 / 213	−3.2
4	93,233	2468.8	− 2473	−4.2	× 40 / 213	−0.8
5	93,234	2502.8	− 2502	0.8	× 23 / 213	0.1
6	93,235	2506.9	− 2531	−24.1	× 32 / 213	−3.6
7	93,236	2570.2	− 2552	18.2	× 38 / 213	3.2
8	93,237	2596.9	− 2567	29.9	× 26 / 213	3.6
11	93,238	2663.3	− 2583	80.3	× 25 / 213	9.4
Sum, rounded to a whole point						9

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	92,962	2389.2	− 2432	−42.8	× 31 / 243	−5.5
4	92,963	2467.7	− 2473	−5.3	× 26 / 243	−0.6
5	92,964	2516.6	− 2502	14.6	× 43 / 243	2.6
6	92,965	2516.4	− 2531	−14.6	× 27 / 243	−1.6
7	92,966	2556.8	− 2552	4.8	× 40 / 243	0.8
8	92,967	2585.1	− 2567	18.1	× 42 / 243	3.1
11	92,968	2659.2	− 2583	76.2	× 34 / 243	10.7
Sum, rounded to a whole point						10

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −15, −13, −2, 0, 21, 24, 17, 11, 9, 10 → 6.2
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 2 · 2016→2017: 11 · 2017→2018: 2 · 2018→2019: 21 · 2019→2021: 3 · 2021→2022: 7 · 2022→2023: 6 · 2023→2024: 2 · 2024→2025: 1 → average 6.1
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 6.1 × 2.66 = 16.2. Upper limit 22.4, lower limit −10.

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.