Leffingwell Elementary (Data source)
Source data for Leffingwell 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 | 687765 | 2454 | - | 2436 | = | 18 | * | (122 | / | 326) | = | 6.7361963 | ||
| 4 | 687766 | 2499 | - | 2485 | = | 14 | * | (112 | / | 326) | = | 4.80981595 | ||
| 5 | 687769 | 2502 | - | 2528 | = | -26 | * | (92 | / | 326) | = | -7.33742329 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Leffingwell Elementary | 4 | ||||||||||||
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 | 21736 | 2472 | - | 2436 | = | 36 | * | (94 | / | 327) | = | 10.34862383 | ||
| 4 | 21739 | 2508 | - | 2485 | = | 23 | * | (121 | / | 327) | = | 8.51070336 | ||
| 5 | 21740 | 2535 | - | 2528 | = | 7 | * | (112 | / | 327) | = | 2.39755352 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Leffingwell Elementary | 21 | ||||||||||||
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 | 22156 | 2475 | - | 2436 | = | 39 | * | (107 | / | 324) | = | 12.87962961 | ||
| 4 | 22157 | 2506 | - | 2485 | = | 21 | * | (93 | / | 324) | = | 6.02777778 | ||
| 5 | 22159 | 2536 | - | 2528 | = | 8 | * | (124 | / | 324) | = | 3.06172839 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Leffingwell Elementary | 22 | ||||||||||||
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 | 22142 | 2505 | - | 2436 | = | 69 | * | (95 | / | 293) | = | 22.37201359 | ||
| 4 | 22144 | 2529 | - | 2485 | = | 44 | * | (102 | / | 293) | = | 15.3174061 | ||
| 5 | 22146 | 2528 | - | 2528 | = | 0 | * | (96 | / | 293) | = | 0.0 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Leffingwell Elementary | 38 | ||||||||||||
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 | 22320 | 2491 | - | 2436 | = | 55 | * | (94 | / | 296) | = | 17.46621619 | ||
| 4 | 22321 | 2540 | - | 2485 | = | 55 | * | (95 | / | 296) | = | 17.65202698 | ||
| 5 | 22322 | 2531 | - | 2528 | = | 3 | * | (107 | / | 296) | = | 1.08445946 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Leffingwell Elementary | 36 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 4 | 21 | 22 | 38 | 36 | 121.0 | 24.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 63.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -14.8
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 | 34% | 34% | 27% | 31% | 30% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
East Whittier City 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.
Leffingwell Elementary math proficiency
Zero+ meets standard.
24% less $meal
25% less $meal
20% less $meal
24% less $meal
24% 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.