Coronado Unified: english

The shaded band is this district'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	71,005	2465.3	− 2432	33.3	× 174 / 1582	3.7
4	71,007	2510.8	− 2473	37.8	× 193 / 1582	4.6
5	71,009	2539.0	− 2502	37	× 221 / 1582	5.2
6	71,011	2579.4	− 2531	48.4	× 223 / 1582	6.8
7	71,013	2600.8	− 2552	48.8	× 256 / 1582	7.9
8	71,015	2627.4	− 2567	60.4	× 243 / 1582	9.3
11	71,017	2650.9	− 2583	67.9	× 272 / 1582	11.7
Sum, rounded to a whole point						49

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	65,807	2465.9	− 2432	33.9	× 182 / 1553	4
4	65,809	2503.9	− 2473	30.9	× 183 / 1553	3.6
5	65,812	2565.9	− 2502	63.9	× 196 / 1553	8.1
6	65,813	2572.1	− 2531	41.1	× 225 / 1553	6
7	65,815	2618.3	− 2552	66.3	× 228 / 1553	9.7
8	65,818	2628.3	− 2567	61.3	× 251 / 1553	9.9
11	65,819	2628.1	− 2583	45.1	× 288 / 1553	8.4
Sum, rounded to a whole point						50

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	67,625	2475.3	− 2432	43.3	× 176 / 1551	4.9
4	67,628	2490.5	− 2473	17.5	× 203 / 1551	2.3
5	67,629	2542.8	− 2502	40.8	× 195 / 1551	5.1
6	67,632	2592.4	− 2531	61.4	× 214 / 1551	8.5
7	67,633	2614.8	− 2552	62.8	× 233 / 1551	9.4
8	67,635	2648.5	− 2567	81.5	× 230 / 1551	12.1
11	67,638	2647.3	− 2583	64.3	× 300 / 1551	12.4
Sum, rounded to a whole point						55

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	67,732	2467.1	− 2432	35.1	× 148 / 1506	3.4
4	67,734	2518.6	− 2473	45.6	× 183 / 1506	5.5
5	67,736	2544.1	− 2502	42.1	× 215 / 1506	6
6	67,738	2608.6	− 2531	77.6	× 212 / 1506	10.9
7	67,740	2619.2	− 2552	67.2	× 236 / 1506	10.5
8	67,742	2628.6	− 2567	61.6	× 241 / 1506	9.9
11	67,744	2626.3	− 2583	43.3	× 271 / 1506	7.8
Sum, rounded to a whole point						54

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	68,242	2472.2	− 2432	40.2	× 188 / 1559	4.8
4	68,243	2507.5	− 2473	34.5	× 171 / 1559	3.8
5	68,244	2567.3	− 2502	65.3	× 217 / 1559	9.1
6	68,245	2588.0	− 2531	57	× 233 / 1559	8.5
7	68,246	2624.1	− 2552	72.1	× 239 / 1559	11.1
8	68,247	2635.6	− 2567	68.6	× 237 / 1559	10.4
11	68,248	2672.5	− 2583	89.5	× 274 / 1559	15.7
Sum, rounded to a whole point						63

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	66,841	2469.7	− 2432	37.7	× 128 / 1173	4.1
4	66,842	2527.6	− 2473	54.6	× 148 / 1173	6.9
5	66,843	2561.8	− 2502	59.8	× 160 / 1173	8.2
6	66,844	2573.4	− 2531	42.4	× 164 / 1173	5.9
7	66,845	2598.8	− 2552	46.8	× 190 / 1173	7.6
8	66,846	2621.6	− 2567	54.6	× 196 / 1173	9.1
11	66,847	2694.1	− 2583	111.1	× 187 / 1173	17.7
Sum, rounded to a whole point						60

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	68,370	2485.4	− 2432	53.4	× 192 / 1393	7.4
4	68,371	2524.1	− 2473	51.1	× 150 / 1393	5.5
5	68,372	2580.3	− 2502	78.3	× 191 / 1393	10.7
6	68,373	2586.4	− 2531	55.4	× 184 / 1393	7.3
7	68,374	2600.1	− 2552	48.1	× 199 / 1393	6.9
8	68,375	2605.6	− 2567	38.6	× 243 / 1393	6.7
11	68,376	2671.7	− 2583	88.7	× 234 / 1393	14.9
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	68,388	2484.0	− 2432	52	× 161 / 1397	6
4	68,389	2516.3	− 2473	43.3	× 208 / 1397	6.4
5	68,390	2558.7	− 2502	56.7	× 162 / 1397	6.6
6	68,391	2601.9	− 2531	70.9	× 225 / 1397	11.4
7	68,392	2596.7	− 2552	44.7	× 203 / 1397	6.5
8	68,393	2607.0	− 2567	40	× 200 / 1397	5.7
11	68,394	2673.1	− 2583	90.1	× 238 / 1397	15.3
Sum, rounded to a whole point						58

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	68,382	2488.8	− 2432	56.8	× 171 / 1399	6.9
4	68,383	2524.4	− 2473	51.4	× 173 / 1399	6.4
5	68,384	2559.1	− 2502	57.1	× 209 / 1399	8.5
6	68,385	2600.0	− 2531	69	× 171 / 1399	8.4
7	68,386	2608.3	− 2552	56.3	× 228 / 1399	9.2
8	68,387	2603.2	− 2567	36.2	× 207 / 1399	5.4
11	68,388	2645.4	− 2583	62.4	× 240 / 1399	10.7
Sum, rounded to a whole point						55

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	68,150	2469.1	− 2432	37.1	× 162 / 1374	4.4
4	68,151	2531.4	− 2473	58.4	× 161 / 1374	6.8
5	68,152	2562.2	− 2502	60.2	× 180 / 1374	7.9
6	68,153	2577.9	− 2531	46.9	× 214 / 1374	7.3
7	68,154	2587.7	− 2552	35.7	× 202 / 1374	5.2
8	68,155	2616.7	− 2567	49.7	× 222 / 1374	8
11	68,156	2676.1	− 2583	93.1	× 233 / 1374	15.8
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. 49, 50, 55, 54, 63, 60, 59, 58, 55, 55 → 55.8
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 1 · 2016→2017: 5 · 2017→2018: 1 · 2018→2019: 9 · 2019→2021: 3 · 2021→2022: 1 · 2022→2023: 1 · 2023→2024: 3 · 2024→2025: 0 → average 2.7
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 2.7 × 2.66 = 7.2. Upper limit 63, lower limit 48.6.

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 — for a district, the total across its schools. From 2014–15, 2015–16, 2016–17, 2017–18, 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25, 2025–26.