Robinson Elementary (Data source)
Source data for Robinson 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 | 1563397 | 2453 | - | 2436 | = | 17 | * | (92 | / | 397) | = | 3.9395466 | ||
| 4 | 1563398 | 2487 | - | 2485 | = | 2 | * | (95 | / | 397) | = | 0.47858942 | ||
| 5 | 1563401 | 2526 | - | 2528 | = | -2 | * | (96 | / | 397) | = | -0.4836272 | ||
| 6 | 1563402 | 2573 | - | 2552 | = | 21 | * | (114 | / | 397) | = | 6.03022669 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Robinson Elementary | 10 | ||||||||||||
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 | 48950 | 2457 | - | 2436 | = | 21 | * | (82 | / | 366) | = | 4.70491802 | ||
| 4 | 48953 | 2508 | - | 2485 | = | 23 | * | (86 | / | 366) | = | 5.40437157 | ||
| 5 | 48954 | 2528 | - | 2528 | = | 0 | * | (103 | / | 366) | = | 0.0 | ||
| 6 | 48957 | 2569 | - | 2552 | = | 17 | * | (95 | / | 366) | = | 4.4125683 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Robinson 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 | 50286 | 2446 | - | 2436 | = | 10 | * | (78 | / | 348) | = | 2.24137931 | ||
| 4 | 50288 | 2499 | - | 2485 | = | 14 | * | (83 | / | 348) | = | 3.33908046 | ||
| 5 | 50290 | 2543 | - | 2528 | = | 15 | * | (87 | / | 348) | = | 3.75 | ||
| 6 | 50292 | 2558 | - | 2552 | = | 6 | * | (100 | / | 348) | = | 1.72413793 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Robinson Elementary | 11 | ||||||||||||
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 | 50310 | 2476 | - | 2436 | = | 40 | * | (76 | / | 321) | = | 9.47040496 | ||
| 4 | 50313 | 2498 | - | 2485 | = | 13 | * | (80 | / | 321) | = | 3.23987538 | ||
| 5 | 50314 | 2516 | - | 2528 | = | -12 | * | (80 | / | 321) | = | -2.9906542 | ||
| 6 | 50316 | 2551 | - | 2552 | = | -1 | * | (85 | / | 321) | = | -0.26479751 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Robinson Elementary | 9 | ||||||||||||
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 | 50504 | 2466 | - | 2436 | = | 30 | * | (68 | / | 295) | = | 6.91525422 | ||
| 4 | 50505 | 2522 | - | 2485 | = | 37 | * | (75 | / | 295) | = | 9.40677966 | ||
| 5 | 50506 | 2519 | - | 2528 | = | -9 | * | (77 | / | 295) | = | -2.34915254 | ||
| 6 | 50507 | 2553 | - | 2552 | = | 1 | * | (75 | / | 295) | = | 0.25423729 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Robinson Elementary | 14 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 10 | 15 | 11 | 9 | 14 | 59.0 | 11.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 17.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 5.8
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 | 10% | 11% | 12% | 15% | 15% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Saddleback Valley 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.
Robinson Elementary math proficiency
Zero+ meets standard.
7% less $meal
10% less $meal
10% less $meal
14% less $meal
14% 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.