Greentree Elementary (Data source)
Source data for Greentree 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 | 1577672 | 2462 | - | 2436 | = | 26 | * | (77 | / | 307) | = | 6.52117263 | ||
| 4 | 1577675 | 2488 | - | 2485 | = | 3 | * | (59 | / | 307) | = | 0.57654723 | ||
| 5 | 1577676 | 2511 | - | 2528 | = | -17 | * | (84 | / | 307) | = | -4.6514658 | ||
| 6 | 1577679 | 2565 | - | 2552 | = | 13 | * | (87 | / | 307) | = | 3.68403909 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Greentree Elementary | 6 | ||||||||||||
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 | 49367 | 2465 | - | 2436 | = | 29 | * | (84 | / | 312) | = | 7.8076923 | ||
| 4 | 49368 | 2510 | - | 2485 | = | 25 | * | (77 | / | 312) | = | 6.16987178 | ||
| 5 | 49370 | 2517 | - | 2528 | = | -11 | * | (62 | / | 312) | = | -2.18589743 | ||
| 6 | 49373 | 2565 | - | 2552 | = | 13 | * | (89 | / | 312) | = | 3.70833333 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Greentree Elementary | 15 | ||||||||||||
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 | 50731 | 2462 | - | 2436 | = | 26 | * | (63 | / | 276) | = | 5.93478259 | ||
| 4 | 50733 | 2514 | - | 2485 | = | 29 | * | (75 | / | 276) | = | 7.88043477 | ||
| 5 | 50735 | 2524 | - | 2528 | = | -4 | * | (73 | / | 276) | = | -1.05797101 | ||
| 6 | 50737 | 2574 | - | 2552 | = | 22 | * | (65 | / | 276) | = | 5.18115941 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Greentree Elementary | 18 | ||||||||||||
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 | 50767 | 2462 | - | 2436 | = | 26 | * | (62 | / | 273) | = | 5.9047619 | ||
| 4 | 50769 | 2499 | - | 2485 | = | 14 | * | (63 | / | 273) | = | 3.23076922 | ||
| 5 | 50771 | 2528 | - | 2528 | = | 0 | * | (81 | / | 273) | = | 0.0 | ||
| 6 | 50773 | 2582 | - | 2552 | = | 30 | * | (67 | / | 273) | = | 7.36263735 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Greentree Elementary | 16 | ||||||||||||
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 | 50974 | 2464 | - | 2436 | = | 28 | * | (73 | / | 282) | = | 7.24822694 | ||
| 4 | 50975 | 2490 | - | 2485 | = | 5 | * | (64 | / | 282) | = | 1.13475177 | ||
| 5 | 50976 | 2515 | - | 2528 | = | -13 | * | (63 | / | 282) | = | -2.90425532 | ||
| 6 | 50977 | 2571 | - | 2552 | = | 19 | * | (82 | / | 282) | = | 5.52482268 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Greentree Elementary | 11 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 6 | 15 | 18 | 16 | 11 | 66.0 | 13.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 25.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 1.2
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 | 19% | 20% | 18% | 26% | 26% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Irvine Unified school district | County of Orange
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.
Greentree Elementary math proficiency
Zero+ meets standard.
16% less $meal
16% less $meal
15% less $meal
23% less $meal
22% 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.