Calistoga Joint 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	46,736	2389.4	− 2432	−42.6	× 71 / 434	−7
4	46,737	2422.1	− 2473	−50.9	× 77 / 434	−9
5	46,740	2489.6	− 2502	−12.4	× 64 / 434	−1.8
6	46,741	2546.0	− 2531	15	× 62 / 434	2.1
7	46,744	2506.1	− 2552	−45.9	× 58 / 434	−6.1
8	46,745	2541.2	− 2567	−25.8	× 50 / 434	−3
11	46,748	2629.7	− 2583	46.7	× 52 / 434	5.6
Sum, rounded to a whole point						−19

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	43,451	2399.7	− 2432	−32.3	× 63 / 460	−4.4
4	43,454	2431.2	− 2473	−41.8	× 70 / 460	−6.4
5	43,455	2464.9	− 2502	−37.1	× 78 / 460	−6.3
6	43,458	2541.6	− 2531	10.6	× 60 / 460	1.4
7	43,459	2566.8	− 2552	14.8	× 61 / 460	2
8	43,461	2528.7	− 2567	−38.3	× 59 / 460	−4.9
11	43,463	2540.3	− 2583	−42.7	× 69 / 460	−6.4
Sum, rounded to a whole point						−25

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	44,516	2396.6	− 2432	−35.4	× 61 / 432	−5
4	44,518	2472.8	− 2473	−0.2	× 64 / 432	0
5	44,521	2461.2	− 2502	−40.8	× 68 / 432	−6.4
6	44,522	2490.8	− 2531	−40.2	× 77 / 432	−7.2
7	44,525	2525.0	− 2552	−27	× 55 / 432	−3.4
8	44,526	2550.3	− 2567	−16.7	× 64 / 432	−2.5
11	44,529	2593.6	− 2583	10.6	× 43 / 432	1.1
Sum, rounded to a whole point						−23

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	44,531	2412.1	− 2432	−19.9	× 61 / 449	−2.7
4	44,534	2430.3	− 2473	−42.7	× 61 / 449	−5.8
5	44,535	2535.9	− 2502	33.9	× 66 / 449	5
6	44,538	2470.0	− 2531	−61	× 73 / 449	−9.9
7	44,539	2556.3	− 2552	4.3	× 78 / 449	0.7
8	44,542	2558.1	− 2567	−8.9	× 58 / 449	−1.1
11	44,543	2553.3	− 2583	−29.7	× 52 / 449	−3.4
Sum, rounded to a whole point						−17

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	44,670	2428.5	− 2432	−3.5	× 68 / 451	−0.5
4	44,671	2459.0	− 2473	−14	× 61 / 451	−1.9
5	44,672	2515.1	− 2502	13.1	× 60 / 451	1.7
6	44,673	2564.2	− 2531	33.2	× 63 / 451	4.6
7	44,674	2513.2	− 2552	−38.8	× 71 / 451	−6.1
8	44,675	2561.1	− 2567	−5.9	× 80 / 451	−1
11	44,676	2587.8	− 2583	4.8	× 48 / 451	0.5
Sum, rounded to a whole point						−3

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	44,416	2413.0	− 2432	−19	× 55 / 435	−2.4
4	44,417	2429.5	− 2473	−43.5	× 59 / 435	−5.9
5	44,418	2505.7	− 2502	3.7	× 59 / 435	0.5
6	44,419	2509.9	− 2531	−21.1	× 67 / 435	−3.2
7	44,420	2547.6	− 2552	−4.4	× 59 / 435	−0.6
8	44,421	2536.1	− 2567	−30.9	× 63 / 435	−4.5
11	44,422	2549.6	− 2583	−33.4	× 73 / 435	−5.6
Sum, rounded to a whole point						−22

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	44,402	2383.6	− 2432	−48.4	× 55 / 408	−6.5
4	44,403	2449.1	− 2473	−23.9	× 52 / 408	−3
5	44,404	2494.8	− 2502	−7.2	× 57 / 408	−1
6	44,405	2519.2	− 2531	−11.8	× 59 / 408	−1.7
7	44,406	2516.9	− 2552	−35.1	× 65 / 408	−5.6
8	44,407	2557.3	− 2567	−9.7	× 57 / 408	−1.4
11	44,408	2555.8	− 2583	−27.2	× 63 / 408	−4.2
Sum, rounded to a whole point						−23

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	44,245	2390.8	− 2432	−41.2	× 53 / 402	−5.4
4	44,246	2432.9	− 2473	−40.1	× 53 / 402	−5.3
5	44,247	2506.6	− 2502	4.6	× 51 / 402	0.6
6	44,248	2530.2	− 2531	−0.8	× 59 / 402	−0.1
7	44,249	2528.3	− 2552	−23.7	× 61 / 402	−3.6
8	44,250	2569.5	− 2567	2.5	× 63 / 402	0.4
11	44,251	2597.4	− 2583	14.4	× 62 / 402	2.2
Sum, rounded to a whole point						−11

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	43,975	2390.1	− 2432	−41.9	× 57 / 405	−5.9
4	43,976	2446.9	− 2473	−26.1	× 58 / 405	−3.7
5	43,977	2496.8	− 2502	−5.2	× 57 / 405	−0.7
6	43,978	2503.7	− 2531	−27.3	× 55 / 405	−3.7
7	43,979	2531.2	− 2552	−20.8	× 57 / 405	−2.9
8	43,980	2548.4	− 2567	−18.6	× 58 / 405	−2.7
11	43,981	2565.5	− 2583	−17.5	× 63 / 405	−2.7
Sum, rounded to a whole point						−22

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −19, −25, −23, −17, −3, −22, −23, −11, −22 → −18.3
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 6 · 2016→2017: 2 · 2017→2018: 6 · 2018→2019: 14 · 2019→2022: 19 · 2022→2023: 1 · 2023→2024: 12 · 2024→2025: 11 → average 8.9
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 8.9 × 2.66 = 23.7. Upper limit 5.4, lower limit −42.

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.