Kellogg Polytechnic 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 6.

3rd The average 3rd grader scores 78 points under the grade 3 bar. 2358 vs. 2436.
4th The average 4th grader scores 43 points under the grade 3 bar. 2393 vs. 2436. The 4th-grade bar is 2485.
5th The average 5th grader scores 33 points under the grade 4 bar. 2452 vs. 2485. The 5th-grade bar is 2528.
6th The average 6th grader scores 37 points under the grade 4 bar. 2448 vs. 2485. The 6th-grade bar is 2552.

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	36,719	2422.4	− 2436	−13.6	× 57 / 201	−3.9
4	36,721	2467.2	− 2485	−17.8	× 53 / 201	−4.7
5	36,723	2477.0	− 2528	−51	× 49 / 201	−12.4
6	36,725	2525.0	− 2552	−27	× 42 / 201	−5.6
Sum, rounded to a whole point						−27

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	34,205	2422.9	− 2436	−13.1	× 51 / 212	−3.2
4	34,206	2457.3	− 2485	−27.7	× 59 / 212	−7.7
5	34,209	2477.2	− 2528	−50.8	× 57 / 212	−13.7
6	34,210	2473.9	− 2552	−78.1	× 45 / 212	−16.6
Sum, rounded to a whole point						−41

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	34,817	2422.8	− 2436	−13.2	× 58 / 216	−3.5
4	34,819	2452.9	− 2485	−32.1	× 49 / 216	−7.3
5	34,820	2467.2	− 2528	−60.8	× 54 / 216	−15.2
6	34,823	2512.6	− 2552	−39.4	× 55 / 216	−10
Sum, rounded to a whole point						−36

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	34,826	2419.6	− 2436	−16.4	× 45 / 184	−4
4	34,828	2463.3	− 2485	−21.7	× 44 / 184	−5.2
5	34,830	2482.0	− 2528	−46	× 51 / 184	−12.8
6	34,832	2504.3	− 2552	−47.7	× 44 / 184	−11.4
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	35,002	2413.3	− 2436	−22.7	× 64 / 191	−7.6
4	35,003	2438.6	− 2485	−46.4	× 39 / 191	−9.5
5	35,004	2483.3	− 2528	−44.7	× 41 / 191	−9.6
6	35,005	2488.4	− 2552	−63.6	× 47 / 191	−15.7
Sum, rounded to a whole point						−42

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	34,899	2375.4	− 2436	−60.6	× 70 / 337	−12.6
4	34,900	2433.0	− 2485	−52	× 88 / 337	−13.6
5	34,901	2438.9	− 2528	−89.1	× 83 / 337	−21.9
6	34,902	2476.7	− 2552	−75.3	× 96 / 337	−21.5
Sum, rounded to a whole point						−70

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	34,948	2387.2	− 2436	−48.8	× 51 / 218	−11.4
4	34,949	2448.5	− 2485	−36.5	× 50 / 218	−8.4
5	34,950	2449.4	− 2528	−78.6	× 67 / 218	−24.2
6	34,951	2456.7	− 2552	−95.3	× 50 / 218	−21.9
Sum, rounded to a whole point						−66

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	34,806	2399.4	− 2436	−36.6	× 58 / 201	−10.6
4	34,807	2437.3	− 2485	−47.7	× 38 / 201	−9
5	34,808	2423.6	− 2528	−104.4	× 49 / 201	−25.5
6	34,809	2473.2	− 2552	−78.8	× 56 / 201	−22
Sum, rounded to a whole point						−67

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	34,653	2354.7	− 2436	−81.3	× 56 / 183	−24.9
4	34,654	2436.7	− 2485	−48.3	× 52 / 183	−13.7
5	34,655	2409.3	− 2528	−118.7	× 34 / 183	−22.1
6	34,656	2431.0	− 2552	−121	× 41 / 183	−27.1
Sum, rounded to a whole point						−88

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	34,657	2358.3	− 2436	−77.7	× 35 / 142	−19.2
4	34,658	2392.6	− 2485	−92.4	× 38 / 142	−24.7
5	34,659	2452.2	− 2528	−75.8	× 42 / 142	−22.4
6	34,660	2448.2	− 2552	−103.8	× 27 / 142	−19.7
Sum, rounded to a whole point						−86

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −27, −41, −36, −33, −42, −70, −66, −67, −88, −86 → −55.6
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: 5 · 2017→2018: 3 · 2018→2019: 9 · 2019→2022: 28 · 2022→2023: 4 · 2023→2024: 1 · 2024→2025: 21 · 2025→2026: 2 → average 9.7
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 9.7 × 2.66 = 25.8. Upper limit −29.8, lower limit −81.4.

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.