Hollister Dual Language Academy: 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.

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	63,777	2439.5	− 2436	3.5	× 59 / 219	0.9
4	63,778	2480.0	− 2485	−5	× 60 / 219	−1.4
5	63,781	2457.5	− 2528	−70.5	× 50 / 219	−16.1
6	63,782	2532.7	− 2552	−19.3	× 50 / 219	−4.4
Sum, rounded to a whole point						−21

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	59,143	2442.0	− 2436	6	× 59 / 268	1.3
4	59,145	2469.0	− 2485	−16	× 59 / 268	−3.5
5	59,147	2510.2	− 2528	−17.8	× 57 / 268	−3.8
6	59,149	2522.8	− 2552	−29.2	× 50 / 268	−5.4
7	59,151	2587.1	− 2567	20.1	× 43 / 268	3.2
Sum, rounded to a whole point						−8

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	60,861	2451.6	− 2436	15.6	× 56 / 317	2.8
4	60,862	2469.5	− 2485	−15.5	× 59 / 317	−2.9
5	60,864	2480.5	− 2528	−47.5	× 57 / 317	−8.5
6	60,867	2531.8	− 2552	−20.2	× 53 / 317	−3.4
7	60,869	2533.1	− 2567	−33.9	× 50 / 317	−5.3
8	60,870	2601.1	− 2586	15.1	× 42 / 317	2
Sum, rounded to a whole point						−15

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	60,978	2459.6	− 2436	23.6	× 96 / 372	6.1
4	60,979	2472.2	− 2485	−12.8	× 59 / 372	−2
5	60,982	2495.3	− 2528	−32.7	× 59 / 372	−5.2
6	60,983	2520.4	− 2552	−31.6	× 57 / 372	−4.8
7	60,986	2576.7	− 2567	9.7	× 48 / 372	1.3
8	60,987	2570.1	− 2586	−15.9	× 53 / 372	−2.3
Sum, rounded to a whole point						−7

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	61,217	2467.3	− 2436	31.3	× 93 / 411	7.1
4	61,218	2468.0	− 2485	−17	× 93 / 411	−3.8
5	61,219	2475.1	− 2528	−52.9	× 59 / 411	−7.6
6	61,220	2526.4	− 2552	−25.6	× 59 / 411	−3.7
7	61,221	2564.3	− 2567	−2.7	× 58 / 411	−0.4
8	61,222	2585.3	− 2586	−0.7	× 49 / 411	−0.1
Sum, rounded to a whole point						−8

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	61,312	2444.0	− 2436	8	× 84 / 481	1.4
4	61,313	2442.2	− 2485	−42.8	× 93 / 481	−8.3
5	61,314	2474.9	− 2528	−53.1	× 97 / 481	−10.7
6	61,315	2485.0	− 2552	−67	× 77 / 481	−10.7
7	61,316	2503.1	− 2567	−63.9	× 79 / 481	−10.5
8	61,317	2495.9	− 2586	−90.1	× 51 / 481	−9.6
Sum, rounded to a whole point						−48

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	61,256	2456.6	− 2436	20.6	× 85 / 508	3.4
4	61,257	2467.8	− 2485	−17.2	× 83 / 508	−2.8
5	61,258	2476.3	− 2528	−51.7	× 88 / 508	−9
6	61,259	2473.3	− 2552	−78.7	× 94 / 508	−14.6
7	61,260	2499.2	− 2567	−67.8	× 78 / 508	−10.4
8	61,261	2487.2	− 2586	−98.8	× 80 / 508	−15.6
Sum, rounded to a whole point						−49

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	61,191	2442.6	− 2436	6.6	× 90 / 502	1.2
4	61,192	2449.0	− 2485	−36	× 78 / 502	−5.6
5	61,193	2500.4	− 2528	−27.6	× 80 / 502	−4.4
6	61,194	2459.5	− 2552	−92.5	× 82 / 502	−15.1
7	61,195	2479.4	− 2567	−87.6	× 96 / 502	−16.8
8	61,196	2496.5	− 2586	−89.5	× 76 / 502	−13.5
Sum, rounded to a whole point						−54

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	60,954	2460.7	− 2436	24.7	× 86 / 509	4.2
4	60,955	2432.3	− 2485	−52.7	× 87 / 509	−9
5	60,956	2476.8	− 2528	−51.2	× 83 / 509	−8.3
6	60,957	2482.0	− 2552	−70	× 80 / 509	−11
7	60,958	2523.1	− 2567	−43.9	× 83 / 509	−7.2
8	60,959	2476.3	− 2586	−109.7	× 90 / 509	−19.4
Sum, rounded to a whole point						−51

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −21, −8, −15, −7, −8, −48, −49, −54, −51 → −29
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 13 · 2016→2017: 7 · 2017→2018: 8 · 2018→2019: 1 · 2019→2022: 40 · 2022→2023: 1 · 2023→2024: 5 · 2024→2025: 3 → 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 −2.9, lower limit −55.1.

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.