Washington Elementary (Data source)
Source data for Washington Elementary
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 | 1027835 | 2420 | - | 2436 | = | -16 | * | (117 | / | 447) | = | -4.18791946 | ||
| 4 | 1027838 | 2476 | - | 2485 | = | -9 | * | (103 | / | 447) | = | -2.0738255 | ||
| 5 | 1027839 | 2471 | - | 2528 | = | -57 | * | (111 | / | 447) | = | -14.15436238 | ||
| 6 | 1027842 | 2471 | - | 2552 | = | -81 | * | (116 | / | 447) | = | -21.02013415 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Washington Elementary | -41 | ||||||||||||
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 | 32278 | 2437 | - | 2436 | = | 1 | * | (95 | / | 414) | = | 0.2294686 | ||
| 4 | 32280 | 2454 | - | 2485 | = | -31 | * | (121 | / | 414) | = | -9.06038646 | ||
| 5 | 32282 | 2465 | - | 2528 | = | -63 | * | (95 | / | 414) | = | -14.45652174 | ||
| 6 | 32285 | 2490 | - | 2552 | = | -62 | * | (103 | / | 414) | = | -15.42512074 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Washington Elementary | -39 | ||||||||||||
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 | 32831 | 2431 | - | 2436 | = | -5 | * | (120 | / | 430) | = | -1.39534884 | ||
| 4 | 32832 | 2474 | - | 2485 | = | -11 | * | (100 | / | 430) | = | -2.55813953 | ||
| 5 | 32834 | 2446 | - | 2528 | = | -82 | * | (121 | / | 430) | = | -23.07441854 | ||
| 6 | 32837 | 2502 | - | 2552 | = | -50 | * | (89 | / | 430) | = | -10.3488372 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Washington Elementary | -37 | ||||||||||||
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 | 32847 | 2443 | - | 2436 | = | 7 | * | (87 | / | 416) | = | 1.46394231 | ||
| 4 | 32849 | 2474 | - | 2485 | = | -11 | * | (118 | / | 416) | = | -3.12019231 | ||
| 5 | 32851 | 2482 | - | 2528 | = | -46 | * | (95 | / | 416) | = | -10.50480766 | ||
| 6 | 32853 | 2530 | - | 2552 | = | -22 | * | (116 | / | 416) | = | -6.13461537 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Washington Elementary | -18 | ||||||||||||
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 | 33021 | 2422 | - | 2436 | = | -14 | * | (94 | / | 394) | = | -3.34010152 | ||
| 4 | 33022 | 2477 | - | 2485 | = | -8 | * | (89 | / | 394) | = | -1.80710659 | ||
| 5 | 33023 | 2490 | - | 2528 | = | -38 | * | (117 | / | 394) | = | -11.28426393 | ||
| 6 | 33024 | 2521 | - | 2552 | = | -31 | * | (94 | / | 394) | = | -7.39593908 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Washington Elementary | -24 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -41 | -39 | -37 | -18 | -24 | -159.0 | -31.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -1.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -61.8
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 | 94% | 88% | 90% | 94% | 93% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Lynwood 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.
Washington Elementary math proficiency
Zero+ meets standard.
79% less $meal
75% less $meal
81% less $meal
84% less $meal
82% 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.