Lake Arrowhead Elementary (Data source)
Source data for Lake Arrowhead 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 | 2037258 | 2421 | - | 2436 | = | -15 | * | (81 | / | 214) | = | -5.67757008 | ||
| 4 | 2037259 | 2446 | - | 2485 | = | -39 | * | (73 | / | 214) | = | -13.30373831 | ||
| 5 | 2037262 | 2462 | - | 2528 | = | -66 | * | (60 | / | 214) | = | -18.50467285 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Lake Arrowhead Elementary | -37 | ||||||||||||
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 | 62582 | 2443 | - | 2436 | = | 7 | * | (107 | / | 329) | = | 2.27659574 | ||
| 4 | 62585 | 2462 | - | 2485 | = | -23 | * | (110 | / | 329) | = | -7.68996959 | ||
| 5 | 62586 | 2457 | - | 2528 | = | -71 | * | (112 | / | 329) | = | -24.1702127 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Lake Arrowhead Elementary | -30 | ||||||||||||
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 | 64379 | 2433 | - | 2436 | = | -3 | * | (94 | / | 306) | = | -0.92156863 | ||
| 4 | 64380 | 2454 | - | 2485 | = | -31 | * | (110 | / | 306) | = | -11.14379084 | ||
| 5 | 64382 | 2461 | - | 2528 | = | -67 | * | (102 | / | 306) | = | -22.33333331 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Lake Arrowhead 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 | 64487 | 2422 | - | 2436 | = | -14 | * | (105 | / | 324) | = | -4.53703704 | ||
| 4 | 64490 | 2433 | - | 2485 | = | -52 | * | (111 | / | 324) | = | -17.81481478 | ||
| 5 | 64491 | 2449 | - | 2528 | = | -79 | * | (108 | / | 324) | = | -26.33333331 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Lake Arrowhead Elementary | -49 | ||||||||||||
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 | 64853 | 2417 | - | 2436 | = | -19 | * | (82 | / | 277) | = | -5.62454872 | ||
| 4 | 64854 | 2451 | - | 2485 | = | -34 | * | (99 | / | 277) | = | -12.15162455 | ||
| 5 | 64855 | 2453 | - | 2528 | = | -75 | * | (96 | / | 277) | = | -25.99277978 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Lake Arrowhead Elementary | -44 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -37 | -30 | -34 | -49 | -44 | -194.0 | -38.8 |
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: -59.8
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 | 52% | 52% | 54% | 55% | 56% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Rim of the World Unified 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.
Lake Arrowhead Elementary math proficiency
Zero+ meets standard.
46% less $meal
46% less $meal
47% less $meal
53% less $meal
52% 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.
Elementary School (Public) schools in Rim of the World Unified (4)
| Charles Hoffman Elementary | Lake Arrowhead Elementary | Rim Virtual |
| Valley of Enchantment Elementary |