Shandon Joint Unified: math

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	82,082	2376.4	− 2436	−59.6	× 22 / 148	−8.9
4	82,085	2463.4	− 2485	−21.6	× 22 / 148	−3.2
5	82,086	2464.9	− 2528	−63.1	× 30 / 148	−12.8
6	82,088	2446.9	− 2552	−105.1	× 17 / 148	−12.1
7	82,090	2500.8	− 2567	−66.2	× 21 / 148	−9.4
8	82,093	2475.2	− 2586	−110.8	× 20 / 148	−15
11	82,094	2490.3	− 2628	−137.7	× 16 / 148	−14.9
Sum, rounded to a whole point						−76

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	76,129	2424.5	− 2436	−11.5	× 26 / 146	−2
4	76,130	2477.8	− 2485	−7.2	× 20 / 146	−1
5	76,132	2486.0	− 2528	−42	× 24 / 146	−6.9
6	76,134	2505.0	− 2552	−47	× 25 / 146	−8
7	76,136	2484.8	− 2567	−82.2	× 15 / 146	−8.4
8	76,139	2528.0	− 2586	−58	× 23 / 146	−9.1
11	76,140	2502.8	− 2628	−125.2	× 13 / 146	−11.1
Sum, rounded to a whole point						−47

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	78,166	2378.8	− 2436	−57.2	× 33 / 160	−11.8
4	78,168	2458.3	− 2485	−26.7	× 21 / 160	−3.5
5	78,169	2521.0	− 2528	−7	× 20 / 160	−0.9
6	78,171	2422.7	− 2552	−129.3	× 26 / 160	−21
7	78,174	2453.6	− 2567	−113.4	× 20 / 160	−14.2
8	78,175	2473.7	− 2586	−112.3	× 21 / 160	−14.7
11	78,177	2525.7	− 2628	−102.3	× 19 / 160	−12.1
Sum, rounded to a whole point						−78

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	78,321	2378.5	− 2436	−57.5	× 29 / 152	−11
4	78,322	2417.1	− 2485	−67.9	× 28 / 152	−12.5
5	78,325	2500.4	− 2528	−27.6	× 20 / 152	−3.6
6	78,326	2515.4	− 2552	−36.6	× 16 / 152	−3.9
7	78,329	2478.5	− 2567	−88.5	× 22 / 152	−12.8
8	78,330	2536.8	− 2586	−49.2	× 19 / 152	−6.2
11	78,333	2502.0	− 2628	−126	× 18 / 152	−14.9
Sum, rounded to a whole point						−65

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	78,854	2392.8	− 2436	−43.2	× 19 / 154	−5.3
4	78,855	2409.2	− 2485	−75.8	× 29 / 154	−14.3
5	78,856	2422.1	− 2528	−105.9	× 25 / 154	−17.2
6	78,857	2533.2	− 2552	−18.8	× 18 / 154	−2.2
7	78,858	2516.8	− 2567	−50.2	× 18 / 154	−5.9
8	78,859	2482.4	− 2586	−103.6	× 22 / 154	−14.8
11	78,860	2564.8	− 2628	−63.2	× 23 / 154	−9.4
Sum, rounded to a whole point						−69

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	79,108	2404.4	− 2436	−31.6	× 19 / 149	−4
4	79,109	2390.3	− 2485	−94.7	× 19 / 149	−12.1
5	79,110	2429.9	− 2528	−98.1	× 21 / 149	−13.8
6	79,111	2365.4	− 2552	−186.6	× 17 / 149	−21.3
7	79,112	2409.0	− 2567	−158	× 27 / 149	−28.6
8	79,113	2421.3	− 2586	−164.7	× 24 / 149	−26.5
11	79,114	2505.9	− 2628	−122.1	× 22 / 149	−18
Sum, rounded to a whole point						−124

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	79,090	2457.4	− 2436	21.4	× 11 / 131	1.8
4	79,091	2444.9	− 2485	−40.1	× 19 / 131	−5.8
5	79,092	2450.6	− 2528	−77.4	× 22 / 131	−13
6	79,093	2439.1	− 2552	−112.9	× 18 / 131	−15.5
7	79,094	2400.8	− 2567	−166.2	× 19 / 131	−24.1
8	79,095	2447.3	− 2586	−138.7	× 23 / 131	−24.4
11	79,096	2507.3	− 2628	−120.7	× 19 / 131	−17.5
Sum, rounded to a whole point						−98

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	79,116	2417.4	− 2436	−18.6	× 15 / 122	−2.3
4	79,117	2419.3	− 2485	−65.7	× 12 / 122	−6.5
5	79,118	2453.6	− 2528	−74.4	× 19 / 122	−11.6
6	79,119	2436.2	− 2552	−115.8	× 19 / 122	−18
7	79,120	2438.1	− 2567	−128.9	× 16 / 122	−16.9
8	79,121	2411.2	− 2586	−174.8	× 20 / 122	−28.7
11	79,122	2515.5	− 2628	−112.5	× 21 / 122	−19.4
Sum, rounded to a whole point						−103

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	78,794	2422.2	− 2436	−13.8	× 14 / 119	−1.6
4	78,795	2470.9	− 2485	−14.1	× 17 / 119	−2
5	78,796	2445.9	− 2528	−82.1	× 15 / 119	−10.3
6	78,797	2510.2	− 2552	−41.8	× 19 / 119	−6.7
7	78,798	2423.3	− 2567	−143.7	× 20 / 119	−24.2
8	78,799	2464.2	− 2586	−121.8	× 15 / 119	−15.4
11	78,800	2450.5	− 2628	−177.5	× 19 / 119	−28.3
Sum, rounded to a whole point						−89

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	78,714	2415.3	− 2436	−20.7	× 21 / 112	−3.9
4	78,715	2472.3	− 2485	−12.7	× 13 / 112	−1.5
5	78,716	2454.2	− 2528	−73.8	× 18 / 112	−11.9
6	78,717	2470.0	− 2552	−82	× 11 / 112	−8.1
7	78,718	2461.7	− 2567	−105.3	× 16 / 112	−15
8	78,719	2449.5	− 2586	−136.5	× 15 / 112	−18.3
11	78,720	2504.0	− 2628	−124	× 18 / 112	−19.9
Sum, rounded to a whole point						−79

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −76, −47, −78, −65, −69, −124, −98, −103, −89, −79 → −82.8
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 29 · 2016→2017: 31 · 2017→2018: 13 · 2018→2019: 4 · 2019→2022: 55 · 2022→2023: 26 · 2023→2024: 5 · 2024→2025: 14 · 2025→2026: 10 → average 20.8
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 20.8 × 2.66 = 55.3. Upper limit −27.5, lower limit −138.1.

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 — 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.

Shandon Joint Unified