Durfee Elementary (Data source)
Source data for Durfee 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 | 696718 | 2378 | - | 2436 | = | -58 | * | (70 | / | 208) | = | -19.51923074 | ||
| 4 | 696719 | 2425 | - | 2485 | = | -60 | * | (69 | / | 208) | = | -19.90384614 | ||
| 5 | 696722 | 2431 | - | 2528 | = | -97 | * | (69 | / | 208) | = | -32.17788459 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Durfee Elementary | -72 | ||||||||||||
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 | 22021 | 2401 | - | 2436 | = | -35 | * | (78 | / | 215) | = | -12.6976744 | ||
| 4 | 22022 | 2406 | - | 2485 | = | -79 | * | (69 | / | 215) | = | -25.35348833 | ||
| 5 | 22024 | 2454 | - | 2528 | = | -74 | * | (68 | / | 215) | = | -23.40465111 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Durfee Elementary | -61 | ||||||||||||
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 | 22441 | 2384 | - | 2436 | = | -52 | * | (59 | / | 205) | = | -14.96585366 | ||
| 4 | 22443 | 2426 | - | 2485 | = | -59 | * | (78 | / | 205) | = | -22.44878044 | ||
| 5 | 22446 | 2417 | - | 2528 | = | -111 | * | (68 | / | 205) | = | -36.81951219 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Durfee Elementary | -74 | ||||||||||||
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 | 22430 | 2404 | - | 2436 | = | -32 | * | (55 | / | 184) | = | -9.56521738 | ||
| 4 | 22433 | 2463 | - | 2485 | = | -22 | * | (57 | / | 184) | = | -6.81521738 | ||
| 5 | 22434 | 2468 | - | 2528 | = | -60 | * | (72 | / | 184) | = | -23.47826082 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Durfee Elementary | -40 | ||||||||||||
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 | 22614 | 2407 | - | 2436 | = | -29 | * | (68 | / | 183) | = | -10.77595627 | ||
| 4 | 22615 | 2458 | - | 2485 | = | -27 | * | (52 | / | 183) | = | -7.67213114 | ||
| 5 | 22616 | 2470 | - | 2528 | = | -58 | * | (63 | / | 183) | = | -19.96721311 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Durfee Elementary | -38 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -72 | -61 | -74 | -40 | -38 | -285.0 | -57.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -6.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -108.0
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 | 85% | 69% | 73% | 75% | 79% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
El Rancho 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.
Durfee Elementary math proficiency
Zero+ meets standard.
69% less $meal
60% less $meal
62% less $meal
64% less $meal
67% 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.