Foster Elementary (Data source)
Source data for Foster 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 | 1162260 | 2382 | - | 2436 | = | -54 | * | (143 | / | 371) | = | -20.81401612 | ||
| 4 | 1162261 | 2408 | - | 2485 | = | -77 | * | (114 | / | 371) | = | -23.66037736 | ||
| 5 | 1162264 | 2444 | - | 2528 | = | -84 | * | (114 | / | 371) | = | -25.81132075 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Foster Elementary | -70 | ||||||||||||
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 | 36162 | 2397 | - | 2436 | = | -39 | * | (131 | / | 361) | = | -14.15235455 | ||
| 4 | 36163 | 2419 | - | 2485 | = | -66 | * | (128 | / | 361) | = | -23.40166204 | ||
| 5 | 36165 | 2454 | - | 2528 | = | -74 | * | (102 | / | 361) | = | -20.90858722 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Foster Elementary | -58 | ||||||||||||
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 | 36911 | 2387 | - | 2436 | = | -49 | * | (127 | / | 362) | = | -17.19060772 | ||
| 4 | 36913 | 2447 | - | 2485 | = | -38 | * | (116 | / | 362) | = | -12.17679554 | ||
| 5 | 36916 | 2446 | - | 2528 | = | -82 | * | (119 | / | 362) | = | -26.95580104 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Foster Elementary | -56 | ||||||||||||
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 | 36878 | 2408 | - | 2436 | = | -28 | * | (94 | / | 318) | = | -8.27672955 | ||
| 4 | 36880 | 2453 | - | 2485 | = | -32 | * | (119 | / | 318) | = | -11.97484275 | ||
| 5 | 36882 | 2436 | - | 2528 | = | -92 | * | (105 | / | 318) | = | -30.37735847 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Foster Elementary | -51 | ||||||||||||
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 | 37070 | 2399 | - | 2436 | = | -37 | * | (94 | / | 297) | = | -11.71043769 | ||
| 4 | 37071 | 2471 | - | 2485 | = | -14 | * | (91 | / | 297) | = | -4.28956228 | ||
| 5 | 37072 | 2458 | - | 2528 | = | -70 | * | (112 | / | 297) | = | -26.39730639 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Foster Elementary | -42 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -70 | -58 | -56 | -51 | -42 | -277.0 | -55.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -25.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -85.4
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 | 74% | 77% | 75% | 87% | 80% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Compton 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.
Foster Elementary math proficiency
Zero+ meets standard.
71% less $meal
75% less $meal
72% less $meal
84% less $meal
77% 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.