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 | 1566980 | 2485 | - | 2436 | = | 49 | * | (106 | / | 333) | = | 15.59759758 | ||
| 4 | 1566983 | 2534 | - | 2485 | = | 49 | * | (115 | / | 333) | = | 16.92192191 | ||
| 5 | 1566984 | 2564 | - | 2528 | = | 36 | * | (112 | / | 333) | = | 12.1081081 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Arroyo Elementary | 45 | ||||||||||||
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 | 49055 | 2493 | - | 2436 | = | 57 | * | (107 | / | 326) | = | 18.70858891 | ||
| 4 | 49056 | 2540 | - | 2485 | = | 55 | * | (112 | / | 326) | = | 18.89570551 | ||
| 5 | 49059 | 2581 | - | 2528 | = | 53 | * | (107 | / | 326) | = | 17.39570547 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Arroyo Elementary | 55 | ||||||||||||
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 | 50405 | 2490 | - | 2436 | = | 54 | * | (117 | / | 354) | = | 17.8474576 | ||
| 4 | 50406 | 2538 | - | 2485 | = | 53 | * | (112 | / | 354) | = | 16.76836154 | ||
| 5 | 50409 | 2575 | - | 2528 | = | 47 | * | (125 | / | 354) | = | 16.59604517 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Arroyo Elementary | 51 | ||||||||||||
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 | 50426 | 2482 | - | 2436 | = | 46 | * | (105 | / | 338) | = | 14.2899408 | ||
| 4 | 50429 | 2527 | - | 2485 | = | 42 | * | (123 | / | 338) | = | 15.28402365 | ||
| 5 | 50430 | 2595 | - | 2528 | = | 67 | * | (110 | / | 338) | = | 21.80473366 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Arroyo Elementary | 51 | ||||||||||||
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 | 50627 | 2491 | - | 2436 | = | 55 | * | (117 | / | 352) | = | 18.28124997 | ||
| 4 | 50628 | 2521 | - | 2485 | = | 36 | * | (108 | / | 352) | = | 11.04545452 | ||
| 5 | 50629 | 2576 | - | 2528 | = | 48 | * | (127 | / | 352) | = | 17.31818179 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Arroyo Elementary | 47 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 45 | 55 | 51 | 51 | 47 | 249.0 | 49.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 58.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 40.8
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 | 4% | 4% | 5% | 8% | 8% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Tustin 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.
Arroyo Elementary math proficiency
Zero+ meets standard.
3% less $meal
4% less $meal
4% less $meal
6% less $meal
7% 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.