Willow Elementary (Data source)
Source data for Willow 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 | 608584 | 2396 | - | 2436 | = | -40 | * | (62 | / | 272) | = | -9.11764704 | ||
| 4 | 608587 | 2404 | - | 2485 | = | -81 | * | (62 | / | 272) | = | -18.46323526 | ||
| 5 | 608588 | 2414 | - | 2528 | = | -114 | * | (70 | / | 272) | = | -29.33823527 | ||
| 6 | 608591 | 2484 | - | 2552 | = | -68 | * | (78 | / | 272) | = | -19.49999994 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Willow Elementary | -76 | ||||||||||||
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 | 19506 | 2406 | - | 2436 | = | -30 | * | (72 | / | 264) | = | -8.18181816 | ||
| 4 | 19507 | 2421 | - | 2485 | = | -64 | * | (61 | / | 264) | = | -14.78787878 | ||
| 5 | 19510 | 2435 | - | 2528 | = | -93 | * | (59 | / | 264) | = | -20.78409086 | ||
| 6 | 19512 | 2483 | - | 2552 | = | -69 | * | (72 | / | 264) | = | -18.81818177 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Willow Elementary | -63 | ||||||||||||
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 | 19799 | 2420 | - | 2436 | = | -16 | * | (55 | / | 250) | = | -3.52 | ||
| 4 | 19802 | 2421 | - | 2485 | = | -64 | * | (73 | / | 250) | = | -18.688 | ||
| 5 | 19804 | 2459 | - | 2528 | = | -69 | * | (61 | / | 250) | = | -16.836 | ||
| 6 | 19805 | 2489 | - | 2552 | = | -63 | * | (61 | / | 250) | = | -15.372 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Willow Elementary | -54 | ||||||||||||
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 | 19799 | 2434 | - | 2436 | = | -2 | * | (62 | / | 258) | = | -0.48062015 | ||
| 4 | 19801 | 2446 | - | 2485 | = | -39 | * | (55 | / | 258) | = | -8.31395347 | ||
| 5 | 19802 | 2443 | - | 2528 | = | -85 | * | (74 | / | 258) | = | -24.37984493 | ||
| 6 | 19805 | 2478 | - | 2552 | = | -74 | * | (67 | / | 258) | = | -19.21705423 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Willow Elementary | -52 | ||||||||||||
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 | 19983 | 2435 | - | 2436 | = | -1 | * | (59 | / | 243) | = | -0.24279835 | ||
| 4 | 19984 | 2462 | - | 2485 | = | -23 | * | (59 | / | 243) | = | -5.58436212 | ||
| 5 | 19985 | 2453 | - | 2528 | = | -75 | * | (56 | / | 243) | = | -17.28395055 | ||
| 6 | 19986 | 2489 | - | 2552 | = | -63 | * | (69 | / | 243) | = | -17.88888887 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Willow Elementary | -41 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -76 | -63 | -54 | -52 | -41 | -286.0 | -57.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -18.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -96.2
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 | 89% | 89% | 88% | 87% | 89% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
ABC 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.
Willow Elementary math proficiency
Zero+ meets standard.
81% less $meal
80% less $meal
79% less $meal
80% less $meal
76% 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.