Pine Grove Elementary Stem Magnet: 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	4,140	2393.3	− 2436	−42.7	× 45 / 160	−12
4	4,143	2446.3	− 2485	−38.7	× 41 / 160	−9.9
5	4,144	2490.9	− 2528	−37.1	× 29 / 160	−6.7
6	4,147	2517.5	− 2552	−34.5	× 45 / 160	−9.7
Sum, rounded to a whole point						−38

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	3,647	2408.9	− 2436	−27.1	× 31 / 152	−5.5
4	3,649	2436.4	− 2485	−48.6	× 50 / 152	−16
5	3,650	2486.7	− 2528	−41.3	× 43 / 152	−11.7
6	3,652	2546.9	− 2552	−5.1	× 28 / 152	−0.9
Sum, rounded to a whole point						−34

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	3,735	2425.6	− 2436	−10.4	× 50 / 174	−3
4	3,737	2447.9	− 2485	−37.1	× 36 / 174	−7.7
5	3,738	2485.8	− 2528	−42.2	× 46 / 174	−11.2
6	3,740	2552.3	− 2552	0.3	× 42 / 174	0.1
Sum, rounded to a whole point						−22

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	3,736	2392.4	− 2436	−43.6	× 31 / 170	−8
4	3,739	2471.1	− 2485	−13.9	× 54 / 170	−4.4
5	3,740	2452.4	− 2528	−75.6	× 37 / 170	−16.5
6	3,743	2517.7	− 2552	−34.3	× 48 / 170	−9.7
Sum, rounded to a whole point						−39

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	3,775	2397.3	− 2436	−38.7	× 30 / 146	−8
4	3,776	2421.5	− 2485	−63.5	× 33 / 146	−14.4
5	3,777	2489.4	− 2528	−38.6	× 50 / 146	−13.2
6	3,778	2562.8	− 2552	10.8	× 33 / 146	2.4
Sum, rounded to a whole point						−33

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	3,619	2416.4	− 2436	−19.6	× 51 / 202	−4.9
4	3,620	2462.1	− 2485	−22.9	× 68 / 202	−7.7
5	3,621	2462.6	− 2528	−65.4	× 56 / 202	−18.1
6	3,622	2525.3	− 2552	−26.7	× 27 / 202	−3.6
Sum, rounded to a whole point						−34

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	3,655	2407.4	− 2436	−28.6	× 31 / 124	−7.2
4	3,656	2430.5	− 2485	−54.5	× 27 / 124	−11.9
5	3,657	2478.1	− 2528	−49.9	× 38 / 124	−15.3
6	3,658	2499.2	− 2552	−52.8	× 28 / 124	−11.9
Sum, rounded to a whole point						−46

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	3,639	2418.4	− 2436	−17.6	× 38 / 146	−4.6
4	3,640	2433.0	− 2485	−52	× 37 / 146	−13.2
5	3,641	2444.9	− 2528	−83.1	× 31 / 146	−17.6
6	3,642	2486.8	− 2552	−65.2	× 40 / 146	−17.9
Sum, rounded to a whole point						−53

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	3,605	2346.2	− 2436	−89.8	× 42 / 154	−24.5
4	3,606	2434.3	− 2485	−50.7	× 44 / 154	−14.5
5	3,607	2447.1	− 2528	−80.9	× 39 / 154	−20.5
6	3,608	2520.8	− 2552	−31.2	× 29 / 154	−5.9
Sum, rounded to a whole point						−65

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	3,567	2374.3	− 2436	−61.7	× 25 / 137	−11.3
4	3,568	2439.4	− 2485	−45.6	× 39 / 137	−13
5	3,569	2444.9	− 2528	−83.1	× 38 / 137	−23
6	3,570	2504.2	− 2552	−47.8	× 35 / 137	−12.2
Sum, rounded to a whole point						−60

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −38, −34, −22, −39, −33, −34, −46, −53, −65, −60 → −42.4
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 4 · 2016→2017: 12 · 2017→2018: 17 · 2018→2019: 6 · 2019→2021: 1 · 2021→2022: 12 · 2022→2023: 7 · 2023→2024: 12 · 2024→2025: 5 → average 8.4
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 8.4 × 2.66 = 22.3. Upper limit −20.1, lower limit −64.7.

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.