Sierra Foothill Charter: math

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.

Measured against the grade bars

The state's math test uses one scale for every grade, so a score means the same thing in grade 3 as in grade 7.

3rd The average 3rd grader meets the grade 3 bar. 2462 vs. 2436.
4th The average 4th grader scores 17 points under the grade 4 bar. 2468 vs. 2485.
5th The average 5th grader scores 26 points under the grade 4 bar. 2459 vs. 2485. The 5th-grade bar is 2528.
6th The average 6th grader meets the grade 6 bar. 2553 vs. 2552.
7th The average 7th grader scores just under the grade 6 bar. 2548 vs. 2552. The 7th-grade bar is 2567.

2026 results. "Meets standard" is the state's mark for being on track for that grade.

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	42,941	2398.2	− 2436	−37.8	× 17 / 73	−8.8
4	42,944	2449.4	− 2485	−35.6	× 14 / 73	−6.8
6	42,947	2505.9	− 2552	−46.1	× 16 / 73	−10.1
7	42,950	2511.7	− 2567	−55.3	× 11 / 73	−8.3
8	42,951	2533.4	− 2586	−52.6	× 15 / 73	−10.8
Sum, rounded to a whole point						−45

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	39,622	2404.1	− 2436	−31.9	× 16 / 56	−9.1
4	39,624	2445.3	− 2485	−39.7	× 14 / 56	−9.9
5	39,626	2484.8	− 2528	−43.2	× 14 / 56	−10.8
7	39,629	2525.8	− 2567	−41.2	× 12 / 56	−8.8
Sum, rounded to a whole point						−39

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
4	40,644	2443.8	− 2485	−41.2	× 15 / 58	−10.7
5	40,647	2485.1	− 2528	−42.9	× 15 / 58	−11.1
6	40,649	2535.2	− 2552	−16.8	× 14 / 58	−4.1
8	40,652	2574.6	− 2586	−11.4	× 14 / 58	−2.8
Sum, rounded to a whole point						−29

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	40,661	2428.6	− 2436	−7.4	× 14 / 67	−1.5
4	40,664	2466.6	− 2485	−18.4	× 12 / 67	−3.3
5	40,665	2466.4	− 2528	−61.6	× 16 / 67	−14.7
6	40,668	2524.9	− 2552	−27.1	× 14 / 67	−5.7
7	40,669	2559.9	− 2567	−7.1	× 11 / 67	−1.2
Sum, rounded to a whole point						−26

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	40,806	2420.0	− 2436	−16	× 14 / 72	−3.1
4	40,807	2464.6	− 2485	−20.4	× 14 / 72	−4
5	40,808	2474.1	− 2528	−53.9	× 14 / 72	−10.5
6	40,809	2467.7	− 2552	−84.3	× 15 / 72	−17.6
7	40,810	2582.3	− 2567	15.3	× 15 / 72	3.2
Sum, rounded to a whole point						−32

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	40,563	2423.0	− 2436	−13	× 15 / 56	−3.5
4	40,564	2443.1	− 2485	−41.9	× 14 / 56	−10.5
5	40,565	2471.9	− 2528	−56.1	× 14 / 56	−14
6	40,566	2535.8	− 2552	−16.2	× 13 / 56	−3.8
Sum, rounded to a whole point						−32

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	40,606	2437.9	− 2436	1.9	× 15 / 77	0.4
4	40,607	2474.1	− 2485	−10.9	× 14 / 77	−2
5	40,608	2480.9	− 2528	−47.1	× 14 / 77	−8.6
6	40,609	2525.4	− 2552	−26.6	× 11 / 77	−3.8
7	40,610	2539.7	− 2567	−27.3	× 12 / 77	−4.3
8	40,611	2582.4	− 2586	−3.6	× 11 / 77	−0.5
Sum, rounded to a whole point						−19

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	40,431	2408.4	− 2436	−27.6	× 14 / 51	−7.6
4	40,432	2496.6	− 2485	11.6	× 14 / 51	3.2
5	40,433	2442.6	− 2528	−85.4	× 11 / 51	−18.4
6	40,434	2500.2	− 2552	−51.8	× 12 / 51	−12.2
Sum, rounded to a whole point						−35

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	40,212	2451.7	− 2436	15.7	× 15 / 56	4.2
4	40,213	2449.6	− 2485	−35.4	× 14 / 56	−8.9
5	40,214	2501.4	− 2528	−26.6	× 13 / 56	−6.2
6	40,215	2526.6	− 2552	−25.4	× 14 / 56	−6.4
Sum, rounded to a whole point						−17

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	40,120	2461.6	− 2436	25.6	× 12 / 65	4.7
4	40,121	2468.3	− 2485	−16.7	× 15 / 65	−3.9
5	40,122	2458.7	− 2528	−69.3	× 11 / 65	−11.7
6	40,123	2552.5	− 2552	0.5	× 13 / 65	0.1
7	40,124	2547.6	− 2567	−19.4	× 14 / 65	−4.2
Sum, rounded to a whole point						−15

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −45, −39, −29, −26, −32, −32, −19, −35, −17, −15 → −28.9
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 6 · 2016→2017: 10 · 2017→2018: 3 · 2018→2019: 6 · 2019→2022: 0 · 2022→2023: 13 · 2023→2024: 16 · 2024→2025: 18 · 2025→2026: 2 → average 8.2
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 8.2 × 2.66 = 21.8. Upper limit −7.1, lower limit −50.7.

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 2014–15, 2015–16, 2016–17, 2017–18, 2018–19, 2020–21, 2021–22, 2022–23, 2023–24, 2024–25, 2025–26.