Discovery Charter Ii: 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	85,846	2426.2	− 2432	−5.8	× 41 / 114	−2.1
4	85,847	2495.5	− 2473	22.5	× 30 / 114	5.9
5	85,850	2556.5	− 2502	54.5	× 30 / 114	14.3
6	85,851	2478.6	− 2531	−52.4	× 13 / 114	−6
Sum, rounded to a whole point						12

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	79,671	2442.5	− 2432	10.5	× 55 / 165	3.5
4	79,673	2493.7	− 2473	20.7	× 45 / 165	5.6
5	79,674	2513.6	− 2502	11.6	× 39 / 165	2.7
6	79,677	2547.6	− 2531	16.6	× 26 / 165	2.6
Sum, rounded to a whole point						15

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	81,828	2448.6	− 2432	16.6	× 64 / 255	4.2
4	81,829	2465.9	− 2473	−7.1	× 66 / 255	−1.8
5	81,832	2496.9	− 2502	−5.1	× 45 / 255	−0.9
6	81,834	2553.1	− 2531	22.1	× 48 / 255	4.2
7	81,836	2552.7	− 2552	0.7	× 20 / 255	0.1
8	81,838	2580.5	− 2567	13.5	× 12 / 255	0.6
Sum, rounded to a whole point						6

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	82,014	2460.0	− 2432	28	× 63 / 269	6.6
4	82,016	2505.5	− 2473	32.5	× 60 / 269	7.2
5	82,018	2521.5	− 2502	19.5	× 55 / 269	4
6	82,020	2537.0	− 2531	6	× 38 / 269	0.8
7	82,022	2593.4	− 2552	41.4	× 36 / 269	5.5
8	82,024	2558.0	− 2567	−9	× 17 / 269	−0.6
Sum, rounded to a whole point						24

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	82,631	2438.2	− 2432	6.2	× 61 / 298	1.3
4	82,632	2483.0	− 2473	10	× 64 / 298	2.1
5	82,633	2556.3	− 2502	54.3	× 53 / 298	9.7
6	82,634	2534.4	− 2531	3.4	× 52 / 298	0.6
7	82,635	2556.9	− 2552	4.9	× 29 / 298	0.5
8	82,636	2611.8	− 2567	44.8	× 39 / 298	5.9
Sum, rounded to a whole point						20

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	80,943	2449.9	− 2432	17.9	× 52 / 258	3.6
4	80,944	2490.7	− 2473	17.7	× 50 / 258	3.4
5	80,945	2515.8	− 2502	13.8	× 54 / 258	2.9
6	80,946	2546.9	− 2531	15.9	× 45 / 258	2.8
7	80,947	2583.4	− 2552	31.4	× 39 / 258	4.7
8	80,948	2589.8	− 2567	22.8	× 18 / 258	1.6
Sum, rounded to a whole point						19

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	82,830	2427.4	− 2432	−4.6	× 56 / 274	−0.9
4	82,831	2454.1	− 2473	−18.9	× 52 / 274	−3.6
5	82,832	2543.9	− 2502	41.9	× 48 / 274	7.3
6	82,833	2517.9	− 2531	−13.1	× 43 / 274	−2.1
7	82,834	2591.1	− 2552	39.1	× 36 / 274	5.1
8	82,835	2574.7	− 2567	7.7	× 39 / 274	1.1
Sum, rounded to a whole point						7

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	82,804	2437.7	− 2432	5.7	× 62 / 253	1.4
4	82,805	2464.4	− 2473	−8.6	× 49 / 253	−1.7
5	82,806	2503.7	− 2502	1.7	× 42 / 253	0.3
6	82,807	2527.7	− 2531	−3.3	× 39 / 253	−0.5
7	82,808	2551.3	− 2552	−0.7	× 31 / 253	−0.1
8	82,809	2611.9	− 2567	44.9	× 30 / 253	5.3
Sum, rounded to a whole point						5

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	82,814	2453.3	− 2432	21.3	× 58 / 287	4.3
4	82,815	2482.7	− 2473	9.7	× 59 / 287	2
5	82,816	2512.5	− 2502	10.5	× 56 / 287	2
6	82,817	2497.3	− 2531	−33.7	× 38 / 287	−4.5
7	82,818	2538.0	− 2552	−14	× 43 / 287	−2.1
8	82,819	2576.2	− 2567	9.2	× 33 / 287	1.1
Sum, rounded to a whole point						3

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	82,490	2429.0	− 2432	−3	× 50 / 268	−0.6
4	82,491	2478.0	− 2473	5	× 58 / 268	1.1
5	82,492	2518.6	− 2502	16.6	× 57 / 268	3.5
6	82,493	2547.7	− 2531	16.7	× 46 / 268	2.9
7	82,494	2563.7	− 2552	11.7	× 23 / 268	1
8	82,495	2579.1	− 2567	12.1	× 34 / 268	1.5
Sum, rounded to a whole point						9

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. 12, 15, 6, 24, 20, 19, 7, 5, 3, 9 → 12
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: 9 · 2017→2018: 18 · 2018→2019: 4 · 2019→2021: 1 · 2021→2022: 12 · 2022→2023: 2 · 2023→2024: 2 · 2024→2025: 6 → average 6.3
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 6.3 × 2.66 = 16.8. Upper limit 28.8, lower limit −4.8.

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 2014–15, 2015–16, 2016–17, 2017–18, 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25, 2025–26.