Del Norte County Office of Education: 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
6	8,504	2480.8	− 2531	−50.2	× 10 / 145	−3.5
7	8,507	2466.1	− 2552	−85.9	× 17 / 145	−10.1
8	8,508	2479.2	− 2567	−87.8	× 38 / 145	−23
11	8,511	2529.4	− 2583	−53.6	× 80 / 145	−29.6
Sum, rounded to a whole point						−66

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	7,609	2375.9	− 2432	−56.1	× 11 / 115	−5.4
5	7,612	2474.0	− 2502	−28	× 11 / 115	−2.7
7	7,617	2516.5	− 2552	−35.5	× 21 / 115	−6.5
8	7,618	2509.1	− 2567	−57.9	× 23 / 115	−11.6
11	7,621	2528.7	− 2583	−54.3	× 49 / 115	−23.1
Sum, rounded to a whole point						−49

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	7,859	2460.7	− 2531	−70.3	× 20 / 149	−9.4
7	7,860	2505.8	− 2552	−46.2	× 27 / 149	−8.4
8	7,862	2511.5	− 2567	−55.5	× 35 / 149	−13
11	7,864	2530.8	− 2583	−52.2	× 67 / 149	−23.5
Sum, rounded to a whole point						−54

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
6	7,886	2470.5	− 2531	−60.5	× 12 / 125	−5.8
7	7,889	2496.8	− 2552	−55.2	× 23 / 125	−10.2
8	7,890	2496.9	− 2567	−70.1	× 34 / 125	−19.1
11	7,893	2510.4	− 2583	−72.6	× 56 / 125	−32.5
Sum, rounded to a whole point						−68

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
7	7,930	2477.9	− 2552	−74.1	× 27 / 119	−16.8
8	7,931	2482.4	− 2567	−84.6	× 37 / 119	−26.3
11	7,932	2525.0	− 2583	−58	× 55 / 119	−26.8
Sum, rounded to a whole point						−70

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	7,851	2334.4	− 2432	−97.6	× 15 / 180	−8.1
4	7,852	2377.8	− 2473	−95.2	× 13 / 180	−6.9
5	7,853	2385.7	− 2502	−116.3	× 14 / 180	−9
6	7,854	2436.7	− 2531	−94.3	× 24 / 180	−12.6
7	7,855	2474.8	− 2552	−77.2	× 19 / 180	−8.1
8	7,856	2511.2	− 2567	−55.8	× 30 / 180	−9.3
11	7,857	2501.1	− 2583	−81.9	× 65 / 180	−29.6
Sum, rounded to a whole point						−84

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
4	7,840	2407.6	− 2473	−65.4	× 16 / 180	−5.8
5	7,841	2427.5	− 2502	−74.5	× 12 / 180	−5
6	7,842	2462.8	− 2531	−68.2	× 16 / 180	−6.1
7	7,843	2468.6	− 2552	−83.4	× 22 / 180	−10.2
8	7,844	2482.4	− 2567	−84.6	× 35 / 180	−16.5
11	7,845	2504.6	− 2583	−78.4	× 79 / 180	−34.4
Sum, rounded to a whole point						−78

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
4	7,784	2395.5	− 2473	−77.5	× 11 / 152	−5.6
5	7,785	2458.2	− 2502	−43.8	× 13 / 152	−3.7
6	7,786	2442.8	− 2531	−88.2	× 23 / 152	−13.3
7	7,787	2473.6	− 2552	−78.4	× 29 / 152	−15
8	7,788	2471.3	− 2567	−95.7	× 23 / 152	−14.5
11	7,789	2514.5	− 2583	−68.5	× 53 / 152	−23.9
Sum, rounded to a whole point						−76

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
5	7,742	2378.5	− 2502	−123.5	× 12 / 156	−9.5
6	7,743	2467.2	− 2531	−63.8	× 15 / 156	−6.1
7	7,744	2467.8	− 2552	−84.2	× 27 / 156	−14.6
8	7,745	2474.0	− 2567	−93	× 30 / 156	−17.9
11	7,746	2531.0	− 2583	−52	× 72 / 156	−24
Sum, rounded to a whole point						−72

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
5	7,744	2445.9	− 2502	−56.1	× 12 / 159	−4.2
6	7,745	2414.8	− 2531	−116.2	× 25 / 159	−18.3
7	7,746	2485.0	− 2552	−67	× 22 / 159	−9.3
8	7,747	2492.5	− 2567	−74.5	× 31 / 159	−14.5
11	7,748	2505.7	− 2583	−77.3	× 69 / 159	−33.5
Sum, rounded to a whole point						−80

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −66, −49, −54, −68, −70, −84, −78, −76, −72, −80 → −69.7
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 17 · 2016→2017: 5 · 2017→2018: 14 · 2018→2019: 2 · 2019→2022: 14 · 2022→2023: 6 · 2023→2024: 2 · 2024→2025: 4 · 2025→2026: 8 → average 8
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 8 × 2.66 = 21.3. Upper limit −48.4, lower limit −91.

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.

Del Norte County Office of Education