Collegeville Elementary: 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 5.

3rd The average 3rd grader scores 57 points under the grade 3 bar. 2379 vs. 2436.
4th The average 4th grader scores 26 points under the grade 4 bar. 2460 vs. 2485.
5th The average 5th grader scores 11 points under the grade 4 bar. 2474 vs. 2485. The 5th-grade bar is 2528.

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	78,823	2378.9	− 2436	−57.1	× 21 / 61	−19.7
4	78,825	2427.4	− 2485	−57.6	× 18 / 61	−17
5	78,826	2428.9	− 2528	−99.1	× 22 / 61	−35.7
Sum, rounded to a whole point						−72

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	73,014	2406.9	− 2436	−29.1	× 16 / 54	−8.6
4	73,017	2425.1	− 2485	−59.9	× 19 / 54	−21.1
5	73,018	2466.1	− 2528	−61.9	× 19 / 54	−21.8
Sum, rounded to a whole point						−51

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	74,981	2419.9	− 2436	−16.1	× 20 / 54	−6
4	74,984	2425.2	− 2485	−59.8	× 18 / 54	−19.9
5	74,985	2437.8	− 2528	−90.2	× 16 / 54	−26.7
Sum, rounded to a whole point						−53

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	75,165	2424.0	− 2436	−12	× 18 / 57	−3.8
4	75,166	2449.1	− 2485	−35.9	× 18 / 57	−11.3
5	75,169	2478.6	− 2528	−49.4	× 21 / 57	−18.2
Sum, rounded to a whole point						−33

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	75,696	2430.4	− 2436	−5.6	× 21 / 67	−1.8
4	75,697	2480.5	− 2485	−4.5	× 21 / 67	−1.4
5	75,698	2474.0	− 2528	−54	× 25 / 67	−20.1
Sum, rounded to a whole point						−23

2021 from sb_ca2021_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	74,251	2319.4	− 2436	−116.6	× 23 / 60	−44.7
4	74,252	2412.0	− 2485	−73	× 14 / 60	−17
5	74,253	2454.8	− 2528	−73.2	× 23 / 60	−28.1
Sum, rounded to a whole point						−90

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	75,836	2353.5	− 2436	−82.5	× 28 / 70	−33
4	75,837	2420.5	− 2485	−64.5	× 24 / 70	−22.1
5	75,838	2457.5	− 2528	−70.5	× 18 / 70	−18.1
Sum, rounded to a whole point						−73

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	75,816	2340.2	− 2436	−95.8	× 27 / 77	−33.6
4	75,817	2433.3	− 2485	−51.7	× 26 / 77	−17.5
5	75,818	2506.8	− 2528	−21.2	× 24 / 77	−6.6
Sum, rounded to a whole point						−58

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	75,815	2378.3	− 2436	−57.7	× 26 / 71	−21.1
4	75,816	2406.5	− 2485	−78.5	× 26 / 71	−28.7
5	75,817	2491.7	− 2528	−36.3	× 19 / 71	−9.7
Sum, rounded to a whole point						−60

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	75,480	2404.8	− 2436	−31.2	× 22 / 69	−9.9
4	75,481	2425.1	− 2485	−59.9	× 22 / 69	−19.1
5	75,482	2440.8	− 2528	−87.2	× 25 / 69	−31.6
Sum, rounded to a whole point						−61

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	75,382	2378.7	− 2436	−57.3	× 29 / 69	−24.1
4	75,383	2459.5	− 2485	−25.5	× 21 / 69	−7.8
5	75,384	2473.8	− 2528	−54.2	× 19 / 69	−14.9
Sum, rounded to a whole point						−47

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −72, −51, −53, −33, −23, −90, −73, −58, −60, −61, −47 → −56.5
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 21 · 2016→2017: 2 · 2017→2018: 20 · 2018→2019: 10 · 2019→2021: 67 · 2021→2022: 17 · 2022→2023: 15 · 2023→2024: 2 · 2024→2025: 1 · 2025→2026: 14 → average 16.9
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 16.9 × 2.66 = 45. Upper limit −11.5, lower limit −101.5.

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