Arroyo Seco Museum Science (Data source)
Source data for Arroyo Seco Museum Science
2015
| Step 1 | Step 2 | Step 3 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Get Mean Scale Score from line numbers in this data file. | Subtract 'met min' Scale Score. from Mean Scale Score to get Distance From Standard | Multiply Distance From Standard by proportion of students in grade. | ||||||||||||
| Grade | Line number |
Mean Scale Score |
- | Scale Score: met min |
= | Distance from standard |
* | (Students tested in grade |
/ | Students) tested in school |
= | Weighted Distance From Standard |
||
| 3 | 859920 | 2436 | - | 2436 | = | 0 | * | (68 | / | 378) | = | 0.0 | ||
| 4 | 859921 | 2444 | - | 2485 | = | -41 | * | (67 | / | 378) | = | -7.26719576 | ||
| 5 | 859924 | 2485 | - | 2528 | = | -43 | * | (62 | / | 378) | = | -7.05291005 | ||
| 6 | 859925 | 2491 | - | 2552 | = | -61 | * | (57 | / | 378) | = | -9.19841265 | ||
| 7 | 859928 | 2561 | - | 2567 | = | -6 | * | (60 | / | 378) | = | -0.95238095 | ||
| 8 | 859929 | 2587 | - | 2586 | = | 1 | * | (64 | / | 378) | = | 0.16931217 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Arroyo Seco Museum Science | -24 | ||||||||||||
2016
| Step 1 | Step 2 | Step 3 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Get Mean Scale Score from line numbers in this data file. | Subtract 'met min' Scale Score. from Mean Scale Score to get Distance From Standard | Multiply Distance From Standard by proportion of students in grade. | ||||||||||||
| Grade | Line number |
Mean Scale Score |
- | Scale Score: met min |
= | Distance from standard |
* | (Students tested in grade |
/ | Students) tested in school |
= | Weighted Distance From Standard |
||
| 3 | 27209 | 2432 | - | 2436 | = | -4 | * | (68 | / | 376) | = | -0.72340425 | ||
| 4 | 27211 | 2470 | - | 2485 | = | -15 | * | (65 | / | 376) | = | -2.5930851 | ||
| 5 | 27212 | 2455 | - | 2528 | = | -73 | * | (65 | / | 376) | = | -12.61968082 | ||
| 6 | 27215 | 2509 | - | 2552 | = | -43 | * | (62 | / | 376) | = | -7.09042553 | ||
| 7 | 27217 | 2547 | - | 2567 | = | -20 | * | (57 | / | 376) | = | -3.03191488 | ||
| 8 | 27218 | 2597 | - | 2586 | = | 11 | * | (59 | / | 376) | = | 1.72606382 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Arroyo Seco Museum Science | -24 | ||||||||||||
2017
| Step 1 | Step 2 | Step 3 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Get Mean Scale Score from line numbers in this data file. | Subtract 'met min' Scale Score. from Mean Scale Score to get Distance From Standard | Multiply Distance From Standard by proportion of students in grade. | ||||||||||||
| Grade | Line number |
Mean Scale Score |
- | Scale Score: met min |
= | Distance from standard |
* | (Students tested in grade |
/ | Students) tested in school |
= | Weighted Distance From Standard |
||
| 3 | 27787 | 2442 | - | 2436 | = | 6 | * | (68 | / | 392) | = | 1.04081632 | ||
| 4 | 27789 | 2450 | - | 2485 | = | -35 | * | (63 | / | 392) | = | -5.62499998 | ||
| 5 | 27792 | 2496 | - | 2528 | = | -32 | * | (68 | / | 392) | = | -5.55102038 | ||
| 6 | 27794 | 2501 | - | 2552 | = | -51 | * | (68 | / | 392) | = | -8.84693874 | ||
| 7 | 27796 | 2553 | - | 2567 | = | -14 | * | (68 | / | 392) | = | -2.42857142 | ||
| 8 | 27798 | 2589 | - | 2586 | = | 3 | * | (57 | / | 392) | = | 0.43622449 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Arroyo Seco Museum Science | -21 | ||||||||||||
2018
| Step 1 | Step 2 | Step 3 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Get Mean Scale Score from line numbers in this data file. | Subtract 'met min' Scale Score. from Mean Scale Score to get Distance From Standard | Multiply Distance From Standard by proportion of students in grade. | ||||||||||||
| Grade | Line number |
Mean Scale Score |
- | Scale Score: met min |
= | Distance from standard |
* | (Students tested in grade |
/ | Students) tested in school |
= | Weighted Distance From Standard |
||
| 3 | 27836 | 2442 | - | 2436 | = | 6 | * | (64 | / | 398) | = | 0.96482412 | ||
| 4 | 27838 | 2446 | - | 2485 | = | -39 | * | (68 | / | 398) | = | -6.66331657 | ||
| 5 | 27840 | 2499 | - | 2528 | = | -29 | * | (67 | / | 398) | = | -4.88190953 | ||
| 6 | 27842 | 2512 | - | 2552 | = | -40 | * | (67 | / | 398) | = | -6.73366832 | ||
| 7 | 27844 | 2547 | - | 2567 | = | -20 | * | (68 | / | 398) | = | -3.41708542 | ||
| 8 | 27846 | 2584 | - | 2586 | = | -2 | * | (64 | / | 398) | = | -0.32160804 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Arroyo Seco Museum Science | -21 | ||||||||||||
2019
| Step 1 | Step 2 | Step 3 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Get Mean Scale Score from line numbers in this data file. | Subtract 'met min' Scale Score. from Mean Scale Score to get Distance From Standard | Multiply Distance From Standard by proportion of students in grade. | ||||||||||||
| Grade | Line number |
Mean Scale Score |
- | Scale Score: met min |
= | Distance from standard |
* | (Students tested in grade |
/ | Students) tested in school |
= | Weighted Distance From Standard |
||
| 3 | 28021 | 2434 | - | 2436 | = | -2 | * | (62 | / | 394) | = | -0.31472081 | ||
| 4 | 28022 | 2456 | - | 2485 | = | -29 | * | (67 | / | 394) | = | -4.93147207 | ||
| 5 | 28023 | 2508 | - | 2528 | = | -20 | * | (64 | / | 394) | = | -3.24873096 | ||
| 6 | 28024 | 2522 | - | 2552 | = | -30 | * | (67 | / | 394) | = | -5.10152283 | ||
| 7 | 28025 | 2537 | - | 2567 | = | -30 | * | (66 | / | 394) | = | -5.0253807 | ||
| 8 | 28026 | 2584 | - | 2586 | = | -2 | * | (68 | / | 394) | = | -0.34517766 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Arroyo Seco Museum Science | -19 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -24 | -24 | -21 | -21 | -19 | -109.0 | -21.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -15.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -27.8
For the lines, you have the data necessary to plot the chart.
Very last step
The percent of students getting a Free or Reduced Price Meal comes from the following sources:
| 2015 | 2016 | 2017 | 2018 | 2019 | |
|---|---|---|---|---|---|
| Percent | 83% | 79% | 78% | 80% | 74% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Los Angeles Unified school district | County of Los Angeles
THIS chart shows what the school system "wants"
PLUS a "special" or "outside" cause of variation: wealth/poverty.
NOT what teachers want.
NOT what principals want.
NOT what parents want.
Arroyo Seco Museum Science math proficiency
Zero+ meets standard.
79% less $meal
64% less $meal
64% less $meal
71% less $meal
67% less $meal
• Any result above zero is proficient; below is not proficient. • There is a 99% chance that results will remain the same in coming years, which is to say, between the Upper and Lower Control Limits (the gray lines). • The houses with the % of students receiving a Free or Reduced Price Meal is a measure of wealth/poverty.