Garretson Elementary (Data source)
Source data for Garretson 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 | 1660473 | 2413 | - | 2436 | = | -23 | * | (138 | / | 617) | = | -5.14424633 | ||
| 4 | 1660474 | 2447 | - | 2485 | = | -38 | * | (176 | / | 617) | = | -10.83954617 | ||
| 5 | 1660477 | 2477 | - | 2528 | = | -51 | * | (150 | / | 617) | = | -12.39870338 | ||
| 6 | 1660478 | 2468 | - | 2552 | = | -84 | * | (153 | / | 617) | = | -20.82982171 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Garretson Elementary | -49 | ||||||||||||
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 | 51835 | 2416 | - | 2436 | = | -20 | * | (145 | / | 612) | = | -4.73856208 | ||
| 4 | 51836 | 2453 | - | 2485 | = | -32 | * | (153 | / | 612) | = | -8.0 | ||
| 5 | 51839 | 2470 | - | 2528 | = | -58 | * | (165 | / | 612) | = | -15.63725489 | ||
| 6 | 51840 | 2483 | - | 2552 | = | -69 | * | (149 | / | 612) | = | -16.79901959 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Garretson Elementary | -45 | ||||||||||||
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 | 53358 | 2419 | - | 2436 | = | -17 | * | (165 | / | 628) | = | -4.4665605 | ||
| 4 | 53360 | 2476 | - | 2485 | = | -9 | * | (145 | / | 628) | = | -2.07802547 | ||
| 5 | 53362 | 2477 | - | 2528 | = | -51 | * | (163 | / | 628) | = | -13.23726114 | ||
| 6 | 53364 | 2495 | - | 2552 | = | -57 | * | (155 | / | 628) | = | -14.0684713 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Garretson Elementary | -34 | ||||||||||||
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 | 53447 | 2413 | - | 2436 | = | -23 | * | (128 | / | 592) | = | -4.97297297 | ||
| 4 | 53448 | 2463 | - | 2485 | = | -22 | * | (171 | / | 592) | = | -6.35472972 | ||
| 5 | 53451 | 2501 | - | 2528 | = | -27 | * | (151 | / | 592) | = | -6.88682431 | ||
| 6 | 53452 | 2497 | - | 2552 | = | -55 | * | (142 | / | 592) | = | -13.19256752 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Garretson Elementary | -31 | ||||||||||||
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 | 53682 | 2422 | - | 2436 | = | -14 | * | (170 | / | 633) | = | -3.75987361 | ||
| 4 | 53683 | 2452 | - | 2485 | = | -33 | * | (131 | / | 633) | = | -6.82938386 | ||
| 5 | 53684 | 2499 | - | 2528 | = | -29 | * | (177 | / | 633) | = | -8.10900474 | ||
| 6 | 53685 | 2507 | - | 2552 | = | -45 | * | (155 | / | 633) | = | -11.01895731 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Garretson Elementary | -30 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -49 | -45 | -34 | -31 | -30 | -189.0 | -37.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -13.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -61.8
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 | 63% | 62% | 59% | 65% | 64% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Corona-Norco Unified school district | County of Riverside
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.
Garretson Elementary math proficiency
Zero+ meets standard.
56% less $meal
53% less $meal
50% less $meal
57% less $meal
57% 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.