Hollywood Beach 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.

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	103,118	2425.1	− 2436	−10.9	× 47 / 213	−2.4
4	103,119	2484.3	− 2485	−0.7	× 66 / 213	−0.2
5	103,122	2501.9	− 2528	−26.1	× 50 / 213	−6.1
6	103,123	2558.4	− 2552	6.4	× 50 / 213	1.5
Sum, rounded to a whole point						−7

2016 from sb_ca2016_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	95,820	2439.7	− 2436	3.7	× 67 / 219	1.1
4	95,822	2469.8	− 2485	−15.2	× 45 / 219	−3.1
5	95,823	2532.1	− 2528	4.1	× 61 / 219	1.1
6	95,825	2527.3	− 2552	−24.7	× 46 / 219	−5.2
Sum, rounded to a whole point						−6

2017 from sb_ca2017_1_csv_v2.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	98,598	2428.8	− 2436	−7.2	× 50 / 208	−1.7
4	98,600	2465.7	− 2485	−19.3	× 62 / 208	−5.8
5	98,602	2505.3	− 2528	−22.7	× 47 / 208	−5.1
6	98,604	2571.5	− 2552	19.5	× 49 / 208	4.6
Sum, rounded to a whole point						−8

2018 from sb_ca2018_1_csv_v3.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	98,772	2403.4	− 2436	−32.6	× 51 / 209	−8
4	98,773	2481.6	− 2485	−3.4	× 54 / 209	−0.9
5	98,776	2504.0	− 2528	−24	× 63 / 209	−7.2
6	98,777	2538.1	− 2552	−13.9	× 41 / 209	−2.7
Sum, rounded to a whole point						−19

2019 from sb_ca2019_1_csv_v4.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	99,455	2408.5	− 2436	−27.5	× 40 / 193	−5.7
4	99,456	2487.0	− 2485	2	× 54 / 193	0.6
5	99,457	2518.9	− 2528	−9.1	× 49 / 193	−2.3
6	99,458	2558.0	− 2552	6	× 50 / 193	1.6
Sum, rounded to a whole point						−6

2022 from sb_ca2022_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	99,640	2431.3	− 2436	−4.7	× 43 / 172	−1.2
4	99,641	2488.5	− 2485	3.5	× 39 / 172	0.8
5	99,642	2541.6	− 2528	13.6	× 38 / 172	3
6	99,643	2480.3	− 2552	−71.7	× 52 / 172	−21.7
Sum, rounded to a whole point						−19

2023 from sb_ca2023_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	99,474	2411.6	− 2436	−24.4	× 35 / 165	−5.2
4	99,475	2488.1	− 2485	3.1	× 45 / 165	0.8
5	99,476	2503.5	− 2528	−24.5	× 50 / 165	−7.4
6	99,477	2565.4	− 2552	13.4	× 35 / 165	2.8
Sum, rounded to a whole point						−9

2024 from sb_ca2024_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	99,381	2466.5	− 2436	30.5	× 26 / 149	5.3
4	99,382	2467.9	− 2485	−17.1	× 36 / 149	−4.1
5	99,383	2521.8	− 2528	−6.2	× 43 / 149	−1.8
6	99,384	2497.8	− 2552	−54.2	× 44 / 149	−16
Sum, rounded to a whole point						−17

2025 from sb_ca2025_1_csv_v1.zip

Grade	Line in file	Average score	Standard Met	Distance	Students	Weighted
3	99,081	2431.9	− 2436	−4.1	× 40 / 133	−1.2
4	99,082	2520.8	− 2485	35.8	× 25 / 133	6.7
5	99,083	2501.1	− 2528	−26.9	× 36 / 133	−7.3
6	99,084	2503.8	− 2552	−48.2	× 32 / 133	−11.6
Sum, rounded to a whole point						−13

Step 2 · The average and the normal range

Average: add the yearly results and divide by how many there are. −7, −6, −8, −19, −6, −19, −9, −17, −13 → −11.6
Typical year-to-year change: how far the result moved from each year to the next, ignoring up or down. 2015→2016: 1 · 2016→2017: 2 · 2017→2018: 11 · 2018→2019: 13 · 2019→2022: 13 · 2022→2023: 10 · 2023→2024: 8 · 2024→2025: 4 → average 7.8
Normal range: multiply the typical change by 2.66, then add it to the average and subtract it. 7.8 × 2.66 = 20.7. Upper limit 9.1, lower limit −32.3.

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.