Old River Elementary (Data source)
Source data for Old River 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 |
||
| 4 | 677696 | 2460 | - | 2485 | = | -25 | * | (318 | / | 703) | = | -11.30867708 | ||
| 5 | 677699 | 2491 | - | 2528 | = | -37 | * | (385 | / | 703) | = | -20.26315789 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Old River Elementary | -32 | ||||||||||||
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 |
||
| 4 | 21437 | 2479 | - | 2485 | = | -6 | * | (349 | / | 703) | = | -2.97866287 | ||
| 5 | 21440 | 2476 | - | 2528 | = | -52 | * | (354 | / | 703) | = | -26.18492172 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Old River Elementary | -29 | ||||||||||||
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 |
||
| 4 | 21845 | 2462 | - | 2485 | = | -23 | * | (353 | / | 709) | = | -11.45133991 | ||
| 5 | 21847 | 2491 | - | 2528 | = | -37 | * | (356 | / | 709) | = | -18.57827924 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Old River Elementary | -30 | ||||||||||||
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 |
||
| 4 | 21821 | 2473 | - | 2485 | = | -12 | * | (355 | / | 718) | = | -5.93314763 | ||
| 5 | 21823 | 2492 | - | 2528 | = | -36 | * | (363 | / | 718) | = | -18.20055708 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Old River Elementary | -24 | ||||||||||||
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 |
||
| 4 | 21991 | 2459 | - | 2485 | = | -26 | * | (304 | / | 666) | = | -11.86786786 | ||
| 5 | 21992 | 2513 | - | 2528 | = | -15 | * | (362 | / | 666) | = | -8.15315315 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Old River Elementary | -20 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -32 | -29 | -30 | -24 | -20 | -135.0 | -27.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -15.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -39.0
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 | 76% | 73% | 74% | 73% | 73% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Downey 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.
Old River Elementary math proficiency
Zero+ meets standard.
54% less $meal
57% less $meal
58% less $meal
58% less $meal
58% 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.