Harrison 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 8.

3rd The average 3rd grader scores 56 points under the grade 3 bar. 2380 vs. 2436.
4th The average 4th grader scores 32 points under the grade 3 bar. 2404 vs. 2436. The 4th-grade bar is 2485.
5th The average 5th grader scores 51 points under the grade 3 bar. 2385 vs. 2436. The 5th-grade bar is 2528.
6th The average 6th grader scores 31 points under the grade 3 bar. 2405 vs. 2436. The 6th-grade bar is 2552.
7th The average 7th grader scores 13 points under the grade 4 bar. 2472 vs. 2485. The 7th-grade bar is 2567.
8th The average 8th grader scores 25 points under the grade 4 bar. 2460 vs. 2485. The 8th-grade bar is 2586.

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	36,705	2435.4	− 2436	−0.6	× 40 / 276	−0.1
4	36,708	2417.3	− 2485	−67.7	× 48 / 276	−11.8
5	36,709	2423.5	− 2528	−104.5	× 46 / 276	−17.4
6	36,712	2475.9	− 2552	−76.1	× 44 / 276	−12.1
7	36,713	2514.1	− 2567	−52.9	× 39 / 276	−7.5
8	36,716	2534.5	− 2586	−51.5	× 59 / 276	−11
Sum, rounded to a whole point						−60

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	34,190	2428.9	− 2436	−7.1	× 44 / 244	−1.3
4	34,192	2442.2	− 2485	−42.8	× 39 / 244	−6.8
5	34,194	2435.5	− 2528	−92.5	× 45 / 244	−17.1
6	34,196	2413.1	− 2552	−138.9	× 45 / 244	−25.6
7	34,199	2513.8	− 2567	−53.2	× 38 / 244	−8.3
8	34,200	2529.8	− 2586	−56.2	× 33 / 244	−7.6
Sum, rounded to a whole point						−67

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	34,803	2421.2	− 2436	−14.8	× 42 / 235	−2.6
4	34,804	2421.2	− 2485	−63.8	× 48 / 235	−13
5	34,806	2491.8	− 2528	−36.2	× 36 / 235	−5.5
6	34,808	2452.2	− 2552	−99.8	× 39 / 235	−16.6
7	34,811	2464.1	− 2567	−102.9	× 39 / 235	−17.1
8	34,812	2534.5	− 2586	−51.5	× 31 / 235	−6.8
Sum, rounded to a whole point						−62

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	34,813	2431.7	− 2436	−4.3	× 28 / 228	−0.5
4	34,815	2410.9	− 2485	−74.1	× 43 / 228	−14
5	34,817	2459.8	− 2528	−68.2	× 46 / 228	−13.8
6	34,819	2488.2	− 2552	−63.8	× 37 / 228	−10.4
7	34,821	2475.9	− 2567	−91.1	× 35 / 228	−14
8	34,823	2465.2	− 2586	−120.8	× 39 / 228	−20.7
Sum, rounded to a whole point						−73

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	34,990	2441.5	− 2436	5.5	× 45 / 229	1.1
4	34,991	2430.2	− 2485	−54.8	× 26 / 229	−6.2
5	34,992	2456.9	− 2528	−71.1	× 39 / 229	−12.1
6	34,993	2483.7	− 2552	−68.3	× 47 / 229	−14
7	34,994	2505.2	− 2567	−61.8	× 37 / 229	−10
8	34,995	2459.9	− 2586	−126.1	× 35 / 229	−19.3
Sum, rounded to a whole point						−61

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	34,887	2373.7	− 2436	−62.3	× 42 / 203	−12.9
4	34,888	2411.1	− 2485	−73.9	× 30 / 203	−10.9
5	34,889	2423.3	− 2528	−104.7	× 31 / 203	−16
6	34,890	2491.6	− 2552	−60.4	× 37 / 203	−11
7	34,891	2425.5	− 2567	−141.5	× 32 / 203	−22.3
8	34,892	2474.2	− 2586	−111.8	× 31 / 203	−17.1
Sum, rounded to a whole point						−90

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	34,936	2384.8	− 2436	−51.2	× 39 / 201	−9.9
4	34,937	2389.6	− 2485	−95.4	× 40 / 201	−19
5	34,938	2431.7	− 2528	−96.3	× 32 / 201	−15.3
6	34,939	2423.3	− 2552	−128.7	× 31 / 201	−19.8
7	34,940	2499.4	− 2567	−67.6	× 26 / 201	−8.7
8	34,941	2437.4	− 2586	−148.6	× 33 / 201	−24.4
Sum, rounded to a whole point						−97

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	34,794	2362.2	− 2436	−73.8	× 35 / 205	−12.6
4	34,795	2416.1	− 2485	−68.9	× 39 / 205	−13.1
5	34,796	2398.1	− 2528	−129.9	× 39 / 205	−24.7
6	34,797	2449.8	− 2552	−102.2	× 31 / 205	−15.5
7	34,798	2452.9	− 2567	−114.1	× 27 / 205	−15
8	34,799	2489.6	− 2586	−96.4	× 34 / 205	−16
Sum, rounded to a whole point						−97

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	34,641	2370.9	− 2436	−65.1	× 42 / 207	−13.2
4	34,642	2399.3	− 2485	−85.7	× 38 / 207	−15.7
5	34,643	2423.5	− 2528	−104.5	× 33 / 207	−16.7
6	34,644	2406.5	− 2552	−145.5	× 33 / 207	−23.2
7	34,645	2454.9	− 2567	−112.1	× 32 / 207	−17.3
8	34,646	2440.6	− 2586	−145.4	× 29 / 207	−20.4
Sum, rounded to a whole point						−106

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	34,645	2380.2	− 2436	−55.8	× 42 / 202	−11.6
4	34,646	2403.9	− 2485	−81.1	× 39 / 202	−15.7
5	34,647	2385.1	− 2528	−142.9	× 35 / 202	−24.8
6	34,648	2405.3	− 2552	−146.7	× 30 / 202	−21.8
7	34,649	2471.7	− 2567	−95.3	× 28 / 202	−13.2
8	34,650	2459.9	− 2586	−126.1	× 28 / 202	−17.5
Sum, rounded to a whole point						−104

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −60, −67, −62, −73, −61, −90, −97, −97, −106, −104 → −81.7
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 7 · 2016→2017: 5 · 2017→2018: 11 · 2018→2019: 12 · 2019→2022: 29 · 2022→2023: 7 · 2023→2024: 0 · 2024→2025: 9 · 2025→2026: 2 → average 9.1
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 9.1 × 2.66 = 24.2. Upper limit −57.5, lower limit −105.9.

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.