Walnut Elementary (Data source)
Source data for Walnut 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 | 1190647 | 2477 | - | 2436 | = | 41 | * | (100 | / | 224) | = | 18.30357141 | ||
| 4 | 1190650 | 2497 | - | 2485 | = | 12 | * | (58 | / | 224) | = | 3.10714285 | ||
| 5 | 1190651 | 2550 | - | 2528 | = | 22 | * | (66 | / | 224) | = | 6.48214285 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Walnut Elementary | 28 | ||||||||||||
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 | 37042 | 2491 | - | 2436 | = | 55 | * | (124 | / | 299) | = | 22.80936455 | ||
| 4 | 37043 | 2517 | - | 2485 | = | 32 | * | (106 | / | 299) | = | 11.3444816 | ||
| 5 | 37046 | 2547 | - | 2528 | = | 19 | * | (69 | / | 299) | = | 4.38461537 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Walnut 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 | 37829 | 2492 | - | 2436 | = | 56 | * | (113 | / | 341) | = | 18.55718474 | ||
| 4 | 37832 | 2526 | - | 2485 | = | 41 | * | (123 | / | 341) | = | 14.78885629 | ||
| 5 | 37834 | 2556 | - | 2528 | = | 28 | * | (105 | / | 341) | = | 8.62170086 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Walnut Elementary | 42 | ||||||||||||
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 | 37769 | 2494 | - | 2436 | = | 58 | * | (115 | / | 353) | = | 18.89518409 | ||
| 4 | 37770 | 2544 | - | 2485 | = | 59 | * | (114 | / | 353) | = | 19.05382433 | ||
| 5 | 37773 | 2563 | - | 2528 | = | 35 | * | (124 | / | 353) | = | 12.29461755 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Walnut Elementary | 50 | ||||||||||||
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 | 37978 | 2495 | - | 2436 | = | 59 | * | (116 | / | 345) | = | 19.83768116 | ||
| 4 | 37979 | 2536 | - | 2485 | = | 51 | * | (113 | / | 345) | = | 16.70434778 | ||
| 5 | 37980 | 2574 | - | 2528 | = | 46 | * | (116 | / | 345) | = | 15.46666666 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Walnut Elementary | 52 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 28 | 39 | 42 | 50 | 52 | 211.0 | 42.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 69.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 15.2
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 | 22% | 22% | 18% | 28% | 26% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Walnut Valley 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.
Walnut Elementary math proficiency
Zero+ meets standard.
11% less $meal
16% less $meal
12% less $meal
25% less $meal
21% 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.