Fairgrove Academy: 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.

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	39,440	2419.0	− 2436	−17	× 100 / 613	−2.8
4	39,442	2465.4	− 2485	−19.6	× 96 / 613	−3.1
5	39,444	2497.9	− 2528	−30.1	× 101 / 613	−5
6	39,446	2512.7	− 2552	−39.3	× 100 / 613	−6.4
7	39,448	2518.6	− 2567	−48.4	× 106 / 613	−8.4
8	39,450	2554.1	− 2586	−31.9	× 110 / 613	−5.7
Sum, rounded to a whole point						−31

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	36,546	2439.7	− 2436	3.7	× 100 / 602	0.6
4	36,549	2465.5	− 2485	−19.5	× 102 / 602	−3.3
5	36,551	2501.6	− 2528	−26.4	× 97 / 602	−4.3
6	36,552	2542.5	− 2552	−9.5	× 100 / 602	−1.6
7	36,554	2552.7	− 2567	−14.3	× 98 / 602	−2.3
8	36,557	2550.3	− 2586	−35.7	× 105 / 602	−6.2
Sum, rounded to a whole point						−17

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	37,312	2429.5	− 2436	−6.5	× 102 / 614	−1.1
4	37,315	2474.7	− 2485	−10.3	× 101 / 614	−1.7
5	37,317	2488.8	− 2528	−39.2	× 105 / 614	−6.7
6	37,319	2544.5	− 2552	−7.5	× 104 / 614	−1.3
7	37,320	2564.7	− 2567	−2.3	× 105 / 614	−0.4
8	37,322	2559.7	− 2586	−26.3	× 97 / 614	−4.2
Sum, rounded to a whole point						−15

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	37,266	2435.3	− 2436	−0.7	× 98 / 627	−0.1
4	37,268	2465.3	− 2485	−19.7	× 108 / 627	−3.4
5	37,270	2510.6	− 2528	−17.4	× 95 / 627	−2.6
6	37,272	2530.8	− 2552	−21.2	× 107 / 627	−3.6
7	37,274	2545.5	− 2567	−21.5	× 114 / 627	−3.9
8	37,276	2577.4	− 2586	−8.6	× 105 / 627	−1.4
Sum, rounded to a whole point						−15

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	37,472	2449.8	− 2436	13.8	× 94 / 642	2
4	37,473	2472.9	− 2485	−12.1	× 98 / 642	−1.8
5	37,474	2502.8	− 2528	−25.2	× 108 / 642	−4.2
6	37,475	2544.5	− 2552	−7.5	× 105 / 642	−1.2
7	37,476	2544.7	− 2567	−22.3	× 124 / 642	−4.3
8	37,477	2563.4	− 2586	−22.6	× 113 / 642	−4
Sum, rounded to a whole point						−14

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	37,379	2415.7	− 2436	−20.3	× 74 / 599	−2.5
4	37,380	2421.0	− 2485	−64	× 92 / 599	−9.8
5	37,381	2469.6	− 2528	−58.4	× 87 / 599	−8.5
6	37,382	2483.1	− 2552	−68.9	× 102 / 599	−11.7
7	37,383	2511.8	− 2567	−55.2	× 122 / 599	−11.2
8	37,384	2552.9	− 2586	−33.1	× 122 / 599	−6.7
Sum, rounded to a whole point						−51

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	37,410	2422.8	− 2436	−13.2	× 63 / 555	−1.5
4	37,411	2444.1	− 2485	−40.9	× 74 / 555	−5.5
5	37,412	2450.1	− 2528	−77.9	× 92 / 555	−12.9
6	37,413	2483.4	− 2552	−68.6	× 89 / 555	−11
7	37,414	2496.9	− 2567	−70.1	× 119 / 555	−15
8	37,415	2535.2	− 2586	−50.8	× 118 / 555	−10.8
Sum, rounded to a whole point						−57

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	37,262	2433.4	− 2436	−2.6	× 66 / 505	−0.3
4	37,263	2448.4	− 2485	−36.6	× 67 / 505	−4.9
5	37,264	2446.6	− 2528	−81.4	× 75 / 505	−12.1
6	37,265	2448.7	− 2552	−103.3	× 89 / 505	−18.2
7	37,266	2519.4	− 2567	−47.6	× 98 / 505	−9.2
8	37,267	2513.3	− 2586	−72.7	× 110 / 505	−15.8
Sum, rounded to a whole point						−61

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	37,081	2445.5	− 2436	9.5	× 83 / 569	1.4
4	37,082	2446.2	− 2485	−38.8	× 70 / 569	−4.8
5	37,083	2469.6	− 2528	−58.4	× 75 / 569	−7.7
6	37,084	2499.0	− 2552	−53	× 124 / 569	−11.6
7	37,085	2507.1	− 2567	−59.9	× 118 / 569	−12.4
8	37,086	2542.1	− 2586	−43.9	× 99 / 569	−7.6
Sum, rounded to a whole point						−43

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −31, −17, −15, −15, −14, −51, −57, −61, −43 → −33.8
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 14 · 2016→2017: 2 · 2017→2018: 0 · 2018→2019: 1 · 2019→2022: 37 · 2022→2023: 6 · 2023→2024: 4 · 2024→2025: 18 → average 10.3
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 10.3 × 2.66 = 27.4. Upper limit −6.4, lower limit −61.2.

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.