Placer 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
3	53,479	2403.0	− 2432	−29	× 13 / 206	−1.8
4	53,482	2429.1	− 2473	−43.9	× 23 / 206	−4.9
5	53,483	2483.3	− 2502	−18.7	× 19 / 206	−1.7
6	53,486	2497.2	− 2531	−33.8	× 21 / 206	−3.4
7	53,487	2461.3	− 2552	−90.7	× 31 / 206	−13.6
8	53,490	2478.7	− 2567	−88.3	× 69 / 206	−29.6
11	53,491	2460.7	− 2583	−122.3	× 30 / 206	−17.8
Sum, rounded to a whole point						−73

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	49,680	2461.5	− 2432	29.5	× 19 / 161	3.5
4	49,682	2474.1	− 2473	1.1	× 15 / 161	0.1
5	49,683	2473.9	− 2502	−28.1	× 24 / 161	−4.2
6	49,686	2559.2	− 2531	28.2	× 23 / 161	4
7	49,687	2547.3	− 2552	−4.7	× 25 / 161	−0.7
8	49,689	2528.9	− 2567	−38.1	× 29 / 161	−6.9
11	49,691	2483.5	− 2583	−99.5	× 26 / 161	−16.1
Sum, rounded to a whole point						−20

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	51,076	2456.4	− 2432	24.4	× 17 / 162	2.6
4	51,078	2471.7	− 2473	−1.3	× 19 / 162	−0.2
5	51,080	2491.1	− 2502	−10.9	× 19 / 162	−1.3
6	51,081	2501.2	− 2531	−29.8	× 29 / 162	−5.3
7	51,083	2544.0	− 2552	−8	× 25 / 162	−1.2
8	51,085	2536.3	− 2567	−30.7	× 28 / 162	−5.3
11	51,087	2484.0	− 2583	−99	× 25 / 162	−15.3
Sum, rounded to a whole point						−26

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	51,111	2475.3	− 2432	43.3	× 14 / 177	3.4
4	51,114	2479.9	− 2473	6.9	× 19 / 177	0.7
5	51,115	2528.5	− 2502	26.5	× 25 / 177	3.7
6	51,118	2519.0	− 2531	−12	× 19 / 177	−1.3
7	51,119	2545.1	− 2552	−6.9	× 30 / 177	−1.2
8	51,122	2549.3	− 2567	−17.7	× 34 / 177	−3.4
11	51,123	2455.3	− 2583	−127.7	× 36 / 177	−26
Sum, rounded to a whole point						−24

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	51,310	2422.3	− 2432	−9.7	× 20 / 198	−1
4	51,311	2458.4	− 2473	−14.6	× 21 / 198	−1.5
5	51,312	2492.5	− 2502	−9.5	× 27 / 198	−1.3
6	51,313	2544.0	− 2531	13	× 25 / 198	1.6
7	51,314	2535.9	− 2552	−16.1	× 30 / 198	−2.4
8	51,315	2534.4	− 2567	−32.6	× 34 / 198	−5.6
11	51,316	2443.3	− 2583	−139.7	× 41 / 198	−28.9
Sum, rounded to a whole point						−39

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	50,067	2428.8	− 2432	−3.2	× 20 / 162	−0.4
4	50,068	2471.0	− 2473	−2	× 28 / 162	−0.3
5	50,069	2510.0	− 2502	8	× 21 / 162	1
6	50,070	2532.2	− 2531	1.2	× 19 / 162	0.1
7	50,071	2512.6	− 2552	−39.4	× 19 / 162	−4.6
8	50,072	2560.4	− 2567	−6.6	× 33 / 162	−1.3
11	50,073	2479.4	− 2583	−103.6	× 22 / 162	−14.1
Sum, rounded to a whole point						−20

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	51,238	2421.3	− 2432	−10.7	× 18 / 162	−1.2
4	51,239	2473.3	− 2473	0.3	× 27 / 162	0.1
5	51,240	2496.8	− 2502	−5.2	× 27 / 162	−0.9
6	51,241	2559.3	− 2531	28.3	× 25 / 162	4.4
7	51,242	2573.1	− 2552	21.1	× 22 / 162	2.9
8	51,243	2508.6	− 2567	−58.4	× 29 / 162	−10.5
11	51,244	2443.6	− 2583	−139.4	× 14 / 162	−12
Sum, rounded to a whole point						−17

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	51,206	2477.9	− 2432	45.9	× 21 / 169	5.7
4	51,207	2487.7	− 2473	14.7	× 19 / 169	1.7
5	51,208	2496.7	− 2502	−5.3	× 28 / 169	−0.9
6	51,209	2547.0	− 2531	16	× 23 / 169	2.2
7	51,210	2573.6	− 2552	21.6	× 33 / 169	4.2
8	51,211	2537.7	− 2567	−29.3	× 31 / 169	−5.4
11	51,212	2412.4	− 2583	−170.6	× 14 / 169	−14.1
Sum, rounded to a whole point						−7

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	51,063	2476.3	− 2432	44.3	× 24 / 164	6.5
4	51,064	2518.7	− 2473	45.7	× 24 / 164	6.7
5	51,065	2506.2	− 2502	4.2	× 25 / 164	0.6
6	51,066	2533.9	− 2531	2.9	× 27 / 164	0.5
7	51,067	2562.5	− 2552	10.5	× 28 / 164	1.8
8	51,068	2583.2	− 2567	16.2	× 36 / 164	3.6
Sum, rounded to a whole point						20

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	50,825	2468.2	− 2432	36.2	× 26 / 162	5.8
4	50,826	2502.7	− 2473	29.7	× 23 / 162	4.2
5	50,827	2539.8	− 2502	37.8	× 26 / 162	6.1
6	50,828	2554.0	− 2531	23	× 26 / 162	3.7
7	50,829	2554.5	− 2552	2.5	× 26 / 162	0.4
8	50,830	2535.6	− 2567	−31.4	× 35 / 162	−6.8
Sum, rounded to a whole point						13

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −73, −20, −26, −24, −39, −20, −17, −7, 20, 13 → −19.3
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 53 · 2016→2017: 6 · 2017→2018: 2 · 2018→2019: 15 · 2019→2021: 19 · 2021→2022: 3 · 2022→2023: 10 · 2023→2024: 27 · 2024→2025: 7 → 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 22.7, lower limit −61.3.

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.