Villacorta Elementary (Data source)
Source data for Villacorta 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 | 1186212 | 2387 | - | 2436 | = | -49 | * | (72 | / | 276) | = | -12.78260869 | ||
| 4 | 1186213 | 2406 | - | 2485 | = | -79 | * | (62 | / | 276) | = | -17.7463768 | ||
| 5 | 1186216 | 2449 | - | 2528 | = | -79 | * | (80 | / | 276) | = | -22.89855069 | ||
| 6 | 1186217 | 2450 | - | 2552 | = | -102 | * | (62 | / | 276) | = | -22.91304346 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Villacorta 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 | 36922 | 2388 | - | 2436 | = | -48 | * | (59 | / | 271) | = | -10.4501845 | ||
| 4 | 36923 | 2390 | - | 2485 | = | -95 | * | (76 | / | 271) | = | -26.64206638 | ||
| 5 | 36925 | 2414 | - | 2528 | = | -114 | * | (57 | / | 271) | = | -23.97785974 | ||
| 6 | 36927 | 2459 | - | 2552 | = | -93 | * | (79 | / | 271) | = | -27.1107011 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Villacorta Elementary | -88 | ||||||||||||
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 | 37702 | 2376 | - | 2436 | = | -60 | * | (70 | / | 268) | = | -15.67164174 | ||
| 4 | 37703 | 2425 | - | 2485 | = | -60 | * | (59 | / | 268) | = | -13.20895518 | ||
| 5 | 37706 | 2400 | - | 2528 | = | -128 | * | (75 | / | 268) | = | -35.82089549 | ||
| 6 | 37708 | 2424 | - | 2552 | = | -128 | * | (64 | / | 268) | = | -30.56716416 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Villacorta Elementary | -95 | ||||||||||||
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 | 37644 | 2376 | - | 2436 | = | -60 | * | (69 | / | 274) | = | -15.10948902 | ||
| 4 | 37646 | 2404 | - | 2485 | = | -81 | * | (72 | / | 274) | = | -21.28467148 | ||
| 5 | 37648 | 2438 | - | 2528 | = | -90 | * | (61 | / | 274) | = | -20.03649633 | ||
| 6 | 37650 | 2444 | - | 2552 | = | -108 | * | (72 | / | 274) | = | -28.37956198 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Villacorta Elementary | -85 | ||||||||||||
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 | 37855 | 2381 | - | 2436 | = | -55 | * | (52 | / | 253) | = | -11.30434778 | ||
| 4 | 37856 | 2441 | - | 2485 | = | -44 | * | (61 | / | 253) | = | -10.60869564 | ||
| 5 | 37857 | 2435 | - | 2528 | = | -93 | * | (75 | / | 253) | = | -27.56916989 | ||
| 6 | 37858 | 2490 | - | 2552 | = | -62 | * | (65 | / | 253) | = | -15.92885375 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Villacorta Elementary | -65 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -76 | -88 | -95 | -85 | -65 | -409.0 | -81.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -48.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -114.8
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 | 92% | 93% | 96% | 97% | 96% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Rowland 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.
Villacorta Elementary math proficiency
Zero+ meets standard.
83% less $meal
84% less $meal
85% less $meal
90% less $meal
91% 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.