Konocti Education Center: 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.

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
4	18,377	2403.8	− 2473	−69.2	× 48 / 233	−14.3
5	18,379	2478.6	− 2502	−23.4	× 29 / 233	−2.9
6	18,382	2492.7	− 2531	−38.3	× 56 / 233	−9.2
7	18,384	2499.1	− 2552	−52.9	× 42 / 233	−9.5
8	18,385	2517.5	− 2567	−49.5	× 34 / 233	−7.2
11	18,387	2581.9	− 2583	−1.1	× 24 / 233	−0.1
Sum, rounded to a whole point						−43

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
4	18,705	2383.2	− 2473	−89.8	× 36 / 271	−11.9
5	18,708	2417.5	− 2502	−84.5	× 42 / 271	−13.1
6	18,709	2460.9	− 2531	−70.1	× 54 / 271	−14
7	18,711	2491.8	− 2552	−60.2	× 67 / 271	−14.9
8	18,714	2511.0	− 2567	−56	× 49 / 271	−10.1
11	18,716	2625.2	− 2583	42.2	× 23 / 271	3.6
Sum, rounded to a whole point						−60

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
4	18,729	2394.1	− 2473	−78.9	× 30 / 269	−8.8
5	18,730	2475.6	− 2502	−26.4	× 41 / 269	−4
6	18,733	2469.1	− 2531	−61.9	× 62 / 269	−14.3
7	18,734	2477.7	− 2552	−74.3	× 53 / 269	−14.6
8	18,737	2503.8	− 2567	−63.2	× 58 / 269	−13.6
11	18,738	2637.0	− 2583	54	× 25 / 269	5
Sum, rounded to a whole point						−50

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
4	18,865	2434.4	− 2473	−38.6	× 43 / 270	−6.1
5	18,866	2486.7	− 2502	−15.3	× 37 / 270	−2.1
6	18,867	2488.2	− 2531	−42.8	× 51 / 270	−8.1
7	18,868	2485.9	− 2552	−66.1	× 62 / 270	−15.2
8	18,869	2508.2	− 2567	−58.8	× 53 / 270	−11.5
11	18,870	2614.8	− 2583	31.8	× 24 / 270	2.8
Sum, rounded to a whole point						−40

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
5	18,393	2473.6	− 2502	−28.4	× 34 / 177	−5.5
6	18,394	2467.0	− 2531	−64	× 42 / 177	−15.2
7	18,395	2487.0	− 2552	−65	× 38 / 177	−14
8	18,396	2507.5	− 2567	−59.5	× 42 / 177	−14.1
11	18,397	2585.2	− 2583	2.2	× 21 / 177	0.3
Sum, rounded to a whole point						−48

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
4	18,908	2378.4	− 2473	−94.6	× 18 / 240	−7.1
5	18,909	2396.8	− 2502	−105.2	× 39 / 240	−17.1
6	18,910	2459.9	− 2531	−71.1	× 51 / 240	−15.1
7	18,911	2455.3	− 2552	−96.7	× 56 / 240	−22.6
8	18,912	2424.9	− 2567	−142.1	× 51 / 240	−30.2
11	18,913	2603.2	− 2583	20.2	× 25 / 240	2.1
Sum, rounded to a whole point						−90

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
5	18,863	2387.3	− 2502	−114.7	× 26 / 211	−14.1
6	18,864	2406.8	− 2531	−124.2	× 50 / 211	−29.4
7	18,865	2442.5	− 2552	−109.5	× 60 / 211	−31.1
8	18,866	2451.2	− 2567	−115.8	× 45 / 211	−24.7
11	18,867	2568.0	− 2583	−15	× 30 / 211	−2.1
Sum, rounded to a whole point						−102

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −43, −60, −50, −40, −48, −90, −102 → −61.9
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2016→2017: 17 · 2017→2018: 10 · 2018→2019: 10 · 2019→2021: 8 · 2021→2022: 42 · 2022→2023: 12 → average 16.5
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 16.5 × 2.66 = 43.9. Upper limit −18, lower limit −105.8.

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 2015–16, 2016–17, 2017–18, 2018–19, 2020–21, 2021–22, 2022–23.