Riviera 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 46 points under the grade 3 bar. 2391 vs. 2436.
4th The average 4th grader scores 33 points under the grade 4 bar. 2452 vs. 2485.
5th The average 5th grader scores 24 points under the grade 4 bar. 2461 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	19,336	2395.7	− 2436	−40.3	× 41 / 111	−14.9
4	19,337	2414.9	− 2485	−70.1	× 33 / 111	−20.8
5	19,340	2451.8	− 2528	−76.2	× 37 / 111	−25.4
Sum, rounded to a whole point						−61

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	18,349	2391.9	− 2436	−44.1	× 47 / 119	−17.4
4	18,351	2451.8	− 2485	−33.2	× 37 / 119	−10.3
5	18,354	2457.4	− 2528	−70.6	× 35 / 119	−20.8
Sum, rounded to a whole point						−49

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	18,677	2406.7	− 2436	−29.3	× 41 / 125	−9.6
4	18,679	2464.8	− 2485	−20.2	× 44 / 125	−7.1
5	18,682	2456.3	− 2528	−71.7	× 40 / 125	−22.9
Sum, rounded to a whole point						−40

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	18,701	2406.1	− 2436	−29.9	× 35 / 119	−8.8
4	18,702	2428.8	− 2485	−56.2	× 37 / 119	−17.5
5	18,705	2476.9	− 2528	−51.1	× 47 / 119	−20.2
Sum, rounded to a whole point						−46

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	18,841	2384.9	− 2436	−51.1	× 35 / 115	−15.6
4	18,842	2432.3	− 2485	−52.7	× 38 / 115	−17.4
5	18,843	2450.8	− 2528	−77.2	× 42 / 115	−28.2
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	18,884	2359.2	− 2436	−76.8	× 38 / 120	−24.3
4	18,885	2422.4	− 2485	−62.6	× 38 / 120	−19.8
5	18,886	2434.5	− 2528	−93.5	× 44 / 120	−34.3
Sum, rounded to a whole point						−78

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	18,839	2366.6	− 2436	−69.4	× 35 / 107	−22.7
4	18,840	2410.6	− 2485	−74.4	× 40 / 107	−27.8
5	18,841	2468.8	− 2528	−59.2	× 32 / 107	−17.7
Sum, rounded to a whole point						−68

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	18,799	2386.3	− 2436	−49.7	× 52 / 143	−18.1
4	18,800	2407.1	− 2485	−77.9	× 48 / 143	−26.1
5	18,801	2423.2	− 2528	−104.8	× 43 / 143	−31.5
Sum, rounded to a whole point						−76

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	18,796	2364.9	− 2436	−71.1	× 40 / 143	−19.9
4	18,797	2449.0	− 2485	−36	× 49 / 143	−12.3
5	18,798	2444.2	− 2528	−83.8	× 54 / 143	−31.6
Sum, rounded to a whole point						−64

2026 from sb_ca2026_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	18,817	2390.5	− 2436	−45.5	× 44 / 137	−14.6
4	18,818	2452.0	− 2485	−33	× 41 / 137	−9.9
5	18,819	2461.3	− 2528	−66.7	× 52 / 137	−25.3
Sum, rounded to a whole point						−50

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −61, −49, −40, −46, −61, −78, −68, −76, −64, −50 → −59.3
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 12 · 2016→2017: 9 · 2017→2018: 6 · 2018→2019: 15 · 2019→2022: 17 · 2022→2023: 10 · 2023→2024: 8 · 2024→2025: 12 · 2025→2026: 14 → average 11.4
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 11.4 × 2.66 = 30.3. Upper limit −29, lower limit −89.6.

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.