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 | 3135611 | 2377 | - | 2436 | = | -59 | * | (36 | / | 152) | = | -13.9736842 | ||
| 4 | 3135612 | 2442 | - | 2485 | = | -43 | * | (35 | / | 152) | = | -9.90131575 | ||
| 5 | 3135615 | 2434 | - | 2528 | = | -94 | * | (44 | / | 152) | = | -27.2105263 | ||
| 6 | 3135616 | 2472 | - | 2552 | = | -80 | * | (37 | / | 152) | = | -19.47368416 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Arroyo Elementary | -71 | ||||||||||||
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 | 96681 | 2394 | - | 2436 | = | -42 | * | (43 | / | 137) | = | -13.18248175 | ||
| 4 | 96683 | 2436 | - | 2485 | = | -49 | * | (40 | / | 137) | = | -14.3065693 | ||
| 5 | 96684 | 2474 | - | 2528 | = | -54 | * | (35 | / | 137) | = | -13.79562041 | ||
| 6 | 96687 | 2472 | - | 2552 | = | -80 | * | (19 | / | 137) | = | -11.09489048 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Arroyo Elementary | -52 | ||||||||||||
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 | 99484 | 2385 | - | 2436 | = | -51 | * | (33 | / | 144) | = | -11.68749997 | ||
| 4 | 99486 | 2425 | - | 2485 | = | -60 | * | (45 | / | 144) | = | -18.75 | ||
| 5 | 99487 | 2448 | - | 2528 | = | -80 | * | (44 | / | 144) | = | -24.4444444 | ||
| 6 | 99490 | 2529 | - | 2552 | = | -23 | * | (22 | / | 144) | = | -3.51388887 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Arroyo Elementary | -58 | ||||||||||||
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 | 99643 | 2391 | - | 2436 | = | -45 | * | (35 | / | 135) | = | -11.66666666 | ||
| 4 | 99645 | 2436 | - | 2485 | = | -49 | * | (31 | / | 135) | = | -11.25185182 | ||
| 5 | 99647 | 2423 | - | 2528 | = | -105 | * | (45 | / | 135) | = | -34.99999997 | ||
| 6 | 99649 | 2478 | - | 2552 | = | -74 | * | (24 | / | 135) | = | -13.1555555 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Arroyo Elementary | -71 | ||||||||||||
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 | 100308 | 2364 | - | 2436 | = | -72 | * | (24 | / | 118) | = | -14.64406776 | ||
| 4 | 100309 | 2433 | - | 2485 | = | -52 | * | (38 | / | 118) | = | -16.7457627 | ||
| 5 | 100310 | 2449 | - | 2528 | = | -79 | * | (37 | / | 118) | = | -24.77118644 | ||
| 6 | 100311 | 2503 | - | 2552 | = | -49 | * | (19 | / | 118) | = | -7.8898305 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Arroyo Elementary | -64 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -71 | -52 | -58 | -71 | -64 | -316.0 | -63.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -39.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -87.2
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 | 49% | 65% | 72% | 68% | 74% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Simi Valley Unified school district County of Ventura
THIS chart shows what the school system "wants"
PLUS a "special" or "outside" cause of variation, parent education.
NOT what teachers want.
NOT what principals want.
NOT what parents want.
Arroyo Elementary math proficiency
Zero+ meets standard.
38% less $meal
53% less $meal
60% less $meal
60% less $meal
62% 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.