Chaparral Elementary (Data source)
Source data for Chaparral 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 | 1061476 | 2373 | - | 2436 | = | -63 | * | (150 | / | 548) | = | -17.2445255 | ||
| 4 | 1061479 | 2412 | - | 2485 | = | -73 | * | (129 | / | 548) | = | -17.18430651 | ||
| 5 | 1061480 | 2455 | - | 2528 | = | -73 | * | (112 | / | 548) | = | -14.91970803 | ||
| 6 | 1061483 | 2477 | - | 2552 | = | -75 | * | (157 | / | 548) | = | -21.48722625 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Chaparral Elementary | -71 | ||||||||||||
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 | 33303 | 2390 | - | 2436 | = | -46 | * | (116 | / | 555) | = | -9.61441441 | ||
| 4 | 33306 | 2403 | - | 2485 | = | -82 | * | (158 | / | 555) | = | -23.34414409 | ||
| 5 | 33308 | 2432 | - | 2528 | = | -96 | * | (150 | / | 555) | = | -25.94594592 | ||
| 6 | 33310 | 2459 | - | 2552 | = | -93 | * | (131 | / | 555) | = | -21.95135135 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Chaparral Elementary | -81 | ||||||||||||
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 | 33895 | 2424 | - | 2436 | = | -12 | * | (101 | / | 508) | = | -2.38582676 | ||
| 4 | 33897 | 2415 | - | 2485 | = | -70 | * | (124 | / | 508) | = | -17.08661416 | ||
| 5 | 33899 | 2404 | - | 2528 | = | -124 | * | (142 | / | 508) | = | -34.66141732 | ||
| 6 | 33901 | 2426 | - | 2552 | = | -126 | * | (141 | / | 508) | = | -34.97244093 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Chaparral Elementary | -89 | ||||||||||||
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 | 33916 | 2395 | - | 2436 | = | -41 | * | (126 | / | 371) | = | -13.92452828 | ||
| 4 | 33919 | 2415 | - | 2485 | = | -70 | * | (117 | / | 371) | = | -22.07547167 | ||
| 5 | 33920 | 2436 | - | 2528 | = | -92 | * | (128 | / | 371) | = | -31.74123988 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Chaparral Elementary | -68 | ||||||||||||
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 | 34098 | 2408 | - | 2436 | = | -28 | * | (123 | / | 379) | = | -9.08707122 | ||
| 4 | 34099 | 2410 | - | 2485 | = | -75 | * | (131 | / | 379) | = | -25.92348278 | ||
| 5 | 34100 | 2465 | - | 2528 | = | -63 | * | (125 | / | 379) | = | -20.77836409 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Chaparral Elementary | -56 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -71 | -81 | -89 | -68 | -56 | -365.0 | -73.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -37.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -109.0
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 | 88% | 92% | 91% | 91% | 91% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Palmdale Elementary 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.
Chaparral Elementary math proficiency
Zero+ meets standard.
73% less $meal
80% less $meal
75% less $meal
82% less $meal
81% 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.