Arroyo Elementary (Data source)
Source data for Arroyo 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 | 2007477 | 2363 | - | 2436 | = | -73 | * | (76 | / | 211) | = | -26.29383883 | ||
| 4 | 2007480 | 2427 | - | 2485 | = | -58 | * | (71 | / | 211) | = | -19.51658762 | ||
| 5 | 2007481 | 2442 | - | 2528 | = | -86 | * | (64 | / | 211) | = | -26.08530801 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Arroyo Elementary | -72 | ||||||||||||
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 | 61746 | 2389 | - | 2436 | = | -47 | * | (46 | / | 192) | = | -11.26041665 | ||
| 4 | 61748 | 2408 | - | 2485 | = | -77 | * | (77 | / | 192) | = | -30.88020828 | ||
| 5 | 61751 | 2447 | - | 2528 | = | -81 | * | (69 | / | 192) | = | -29.109375 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Arroyo Elementary | -71 | ||||||||||||
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 | 63537 | 2408 | - | 2436 | = | -28 | * | (64 | / | 201) | = | -8.91542288 | ||
| 4 | 63539 | 2427 | - | 2485 | = | -58 | * | (59 | / | 201) | = | -17.0248756 | ||
| 5 | 63541 | 2453 | - | 2528 | = | -75 | * | (78 | / | 201) | = | -29.10447758 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Arroyo Elementary | -55 | ||||||||||||
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 | 63637 | 2403 | - | 2436 | = | -33 | * | (68 | / | 185) | = | -12.12972971 | ||
| 4 | 63639 | 2447 | - | 2485 | = | -38 | * | (54 | / | 185) | = | -11.09189186 | ||
| 5 | 63641 | 2470 | - | 2528 | = | -58 | * | (59 | / | 185) | = | -18.49729724 | ||
| 6 | 63643 | 0 | - | 2552 | = | * | (0 | / | 185) | = | ||||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Arroyo Elementary | -42 | ||||||||||||
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 | 63908 | 2395 | - | 2436 | = | -41 | * | (52 | / | 237) | = | -8.99578056 | ||
| 4 | 63909 | 2434 | - | 2485 | = | -51 | * | (69 | / | 237) | = | -14.84810124 | ||
| 5 | 63910 | 2474 | - | 2528 | = | -54 | * | (60 | / | 237) | = | -13.67088602 | ||
| 6 | 63911 | 2489 | - | 2552 | = | -63 | * | (56 | / | 237) | = | -14.8860759 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Arroyo Elementary | -52 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -72 | -71 | -55 | -42 | -52 | -292.0 | -58.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -22.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -94.4
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 | 87% | 87% | 78% | 80% | 85% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Ontario-Montclair school district | County of San Bernardino
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.
Arroyo Elementary math proficiency
Zero+ meets standard.
79% less $meal
77% less $meal
71% less $meal
68% less $meal
73% 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.