Upper Lake 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.

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	18,987	2401.9	− 2436	−34.1	× 58 / 409	−4.8
4	18,988	2450.1	− 2485	−34.9	× 68 / 409	−5.8
5	18,990	2417.2	− 2528	−110.8	× 45 / 409	−12.2
6	18,993	2455.2	− 2552	−96.8	× 69 / 409	−16.3
7	18,995	2446.5	− 2567	−120.5	× 48 / 409	−14.1
8	18,997	2444.8	− 2586	−141.2	× 46 / 409	−15.9
11	18,999	2490.3	− 2628	−137.7	× 75 / 409	−25.3
Sum, rounded to a whole point						−94

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	18,996	2435.0	− 2436	−1	× 61 / 433	−0.1
4	18,999	2469.7	− 2485	−15.3	× 59 / 433	−2.1
5	19,001	2447.3	− 2528	−80.7	× 66 / 433	−12.3
6	19,003	2439.0	− 2552	−113	× 54 / 433	−14.1
7	19,005	2462.0	− 2567	−105	× 65 / 433	−15.8
8	19,006	2474.6	− 2586	−111.4	× 47 / 433	−12.1
11	19,009	2463.6	− 2628	−164.4	× 81 / 433	−30.8
Sum, rounded to a whole point						−87

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	19,155	2442.0	− 2436	6	× 42 / 407	0.6
4	19,156	2469.8	− 2485	−15.2	× 63 / 407	−2.4
5	19,157	2473.8	− 2528	−54.2	× 56 / 407	−7.5
6	19,158	2463.0	− 2552	−89	× 66 / 407	−14.4
7	19,159	2453.6	− 2567	−113.4	× 49 / 407	−13.7
8	19,160	2452.8	− 2586	−133.2	× 67 / 407	−21.9
11	19,161	2452.7	− 2628	−175.3	× 64 / 407	−27.6
Sum, rounded to a whole point						−87

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	18,684	2381.5	− 2436	−54.5	× 49 / 376	−7.1
4	18,685	2416.7	− 2485	−68.3	× 63 / 376	−11.4
5	18,686	2442.0	− 2528	−86	× 42 / 376	−9.6
6	18,687	2452.4	− 2552	−99.6	× 61 / 376	−16.2
7	18,688	2460.9	− 2567	−106.1	× 57 / 376	−16.1
8	18,689	2476.1	− 2586	−109.9	× 62 / 376	−18.1
11	18,690	2491.4	− 2628	−136.6	× 42 / 376	−15.3
Sum, rounded to a whole point						−94

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	19,210	2403.5	− 2436	−32.5	× 60 / 439	−4.4
4	19,211	2429.4	− 2485	−55.6	× 50 / 439	−6.3
5	19,212	2425.4	− 2528	−102.6	× 72 / 439	−16.8
6	19,213	2505.8	− 2552	−46.2	× 48 / 439	−5.1
7	19,214	2492.2	− 2567	−74.8	× 52 / 439	−8.9
8	19,215	2482.2	− 2586	−103.8	× 60 / 439	−14.2
11	19,216	2467.6	− 2628	−160.4	× 97 / 439	−35.4
Sum, rounded to a whole point						−91

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	19,155	2373.5	− 2436	−62.5	× 67 / 452	−9.3
4	19,156	2417.7	− 2485	−67.3	× 61 / 452	−9.1
5	19,157	2411.4	− 2528	−116.6	× 53 / 452	−13.7
6	19,158	2455.9	− 2552	−96.1	× 77 / 452	−16.4
7	19,159	2475.6	− 2567	−91.4	× 50 / 452	−10.1
8	19,160	2464.4	− 2586	−121.6	× 63 / 452	−16.9
11	19,161	2502.2	− 2628	−125.8	× 81 / 452	−22.5
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	19,101	2376.8	− 2436	−59.2	× 61 / 454	−8
4	19,102	2406.8	− 2485	−78.2	× 69 / 454	−11.9
5	19,103	2430.4	− 2528	−97.6	× 63 / 454	−13.5
6	19,104	2448.8	− 2552	−103.2	× 56 / 454	−12.7
7	19,105	2422.6	− 2567	−144.4	× 74 / 454	−23.5
8	19,106	2465.9	− 2586	−120.1	× 49 / 454	−13
11	19,107	2486.4	− 2628	−141.6	× 82 / 454	−25.6
Sum, rounded to a whole point						−108

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	19,086	2388.1	− 2436	−47.9	× 70 / 459	−7.3
4	19,087	2430.9	− 2485	−54.1	× 57 / 459	−6.7
5	19,088	2420.5	− 2528	−107.5	× 70 / 459	−16.4
6	19,089	2378.7	− 2552	−173.3	× 69 / 459	−26.1
7	19,090	2447.5	− 2567	−119.5	× 51 / 459	−13.3
8	19,091	2427.8	− 2586	−158.2	× 67 / 459	−23.1
11	19,092	2472.8	− 2628	−155.2	× 75 / 459	−25.4
Sum, rounded to a whole point						−118

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	19,107	2384.3	− 2436	−51.7	× 69 / 428	−8.3
4	19,108	2406.8	− 2485	−78.2	× 64 / 428	−11.7
5	19,109	2420.8	− 2528	−107.2	× 53 / 428	−13.3
6	19,110	2407.7	− 2552	−144.3	× 67 / 428	−22.6
7	19,111	2427.9	− 2567	−139.1	× 60 / 428	−19.5
8	19,112	2457.2	− 2586	−128.8	× 46 / 428	−13.8
11	19,113	2480.5	− 2628	−147.5	× 69 / 428	−23.8
Sum, rounded to a whole point						−113

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −94, −87, −87, −94, −91, −98, −108, −118, −113 → −98.9
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2017→2018: 7 · 2018→2019: 0 · 2019→2021: 7 · 2021→2022: 3 · 2022→2023: 7 · 2023→2024: 10 · 2024→2025: 10 · 2025→2026: 5 → average 6.1
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 6.1 × 2.66 = 16.2. Upper limit −82.7, lower limit −115.1.

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 2016–17, 2017–18, 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25, 2025–26.

Schools in Upper Lake Unified