Knights Ferry Elementary: 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
5	96,921	2536.5	− 2502	34.5	× 11 / 35	10.8
6	96,922	2548.1	− 2531	17.1	× 12 / 35	5.9
8	96,926	2586.3	− 2567	19.3	× 12 / 35	6.6
Sum, rounded to a whole point						23

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
5	89,876	2472.8	− 2502	−29.2	× 11 / 28	−11.5
6	89,878	2556.8	− 2531	25.8	× 17 / 28	15.7
Sum, rounded to a whole point						4

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	92,496	2392.5	− 2432	−39.5	× 11 / 60	−7.2
4	92,499	2445.4	− 2473	−27.6	× 12 / 60	−5.5
5	92,501	2484.3	− 2502	−17.7	× 12 / 60	−3.5
7	92,504	2602.6	− 2552	50.6	× 14 / 60	11.8
8	92,506	2556.5	− 2567	−10.5	× 11 / 60	−1.9
Sum, rounded to a whole point						−6

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	92,696	2385.3	− 2432	−46.7	× 11 / 60	−8.6
4	92,698	2399.9	− 2473	−73.1	× 11 / 60	−13.4
5	92,699	2448.3	− 2502	−53.7	× 12 / 60	−10.7
7	92,703	2573.0	− 2552	21	× 14 / 60	4.9
8	92,706	2633.8	− 2567	66.8	× 12 / 60	13.4
Sum, rounded to a whole point						−14

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,326	2460.6	− 2432	28.6	× 22 / 88	7.2
4	93,327	2440.0	− 2473	−33	× 12 / 88	−4.5
5	93,328	2470.2	− 2502	−31.8	× 12 / 88	−4.3
6	93,329	2490.1	− 2531	−40.9	× 14 / 88	−6.5
7	93,330	2546.1	− 2552	−5.9	× 14 / 88	−0.9
8	93,331	2580.3	− 2567	13.3	× 14 / 88	2.1
Sum, rounded to a whole point						−7

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	91,341	2454.3	− 2432	22.3	× 15 / 73	4.6
4	91,342	2459.9	− 2473	−13.1	× 15 / 73	−2.7
5	91,343	2470.3	− 2502	−31.7	× 20 / 73	−8.7
6	91,344	2552.0	− 2531	21	× 12 / 73	3.5
8	91,346	2540.8	− 2567	−26.2	× 11 / 73	−3.9
Sum, rounded to a whole point						−7

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,557	2436.2	− 2432	4.2	× 21 / 74	1.2
4	93,558	2470.6	− 2473	−2.4	× 17 / 74	−0.6
5	93,559	2487.6	− 2502	−14.4	× 16 / 74	−3.1
6	93,560	2524.2	− 2531	−6.8	× 20 / 74	−1.8
Sum, rounded to a whole point						−4

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,461	2430.1	− 2432	−1.9	× 16 / 71	−0.4
4	93,462	2481.5	− 2473	8.5	× 15 / 71	1.8
5	93,463	2480.3	− 2502	−21.7	× 16 / 71	−4.9
6	93,464	2464.6	− 2531	−66.4	× 13 / 71	−12.2
7	93,465	2572.2	− 2552	20.2	× 11 / 71	3.1
Sum, rounded to a whole point						−13

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
4	93,345	2493.8	− 2473	20.8	× 15 / 39	8
5	93,346	2499.4	− 2502	−2.6	× 13 / 39	−0.9
6	93,347	2535.9	− 2531	4.9	× 11 / 39	1.4
Sum, rounded to a whole point						9

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	93,074	2521.0	− 2432	89	× 12 / 27	39.6
5	93,076	2542.1	− 2502	40.1	× 15 / 27	22.3
Sum, rounded to a whole point						62

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	92,676	2495.1	− 2432	63.1	× 15 / 44	21.5
4	92,677	2486.1	− 2473	13.1	× 16 / 44	4.8
6	92,679	2559.8	− 2531	28.8	× 13 / 44	8.5
Sum, rounded to a whole point						35

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. 23, 4, −6, −14, −7, −7, −4, −13, 9, 62, 35 → 7.5
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 19 · 2016→2017: 10 · 2017→2018: 8 · 2018→2019: 7 · 2019→2021: 0 · 2021→2022: 3 · 2022→2023: 9 · 2023→2024: 22 · 2024→2025: 53 · 2025→2026: 27 → average 15.8
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 15.8 × 2.66 = 42. Upper limit 49.5, lower limit −34.5.

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.

Schools in Knights Ferry Elementary

K–8 schools

Knights Ferry Elementary