Altadena Elementary (Data source)
Source data for Altadena 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 | 1081212 | 2369 | - | 2436 | = | -67 | * | (64 | / | 143) | = | -29.98601395 | ||
| 4 | 1081215 | 2406 | - | 2485 | = | -79 | * | (41 | / | 143) | = | -22.65034959 | ||
| 5 | 1081216 | 2433 | - | 2528 | = | -95 | * | (38 | / | 143) | = | -25.24475518 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Altadena Elementary | -78 | ||||||||||||
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 | 33887 | 2382 | - | 2436 | = | -54 | * | (56 | / | 180) | = | -16.79999999 | ||
| 4 | 33890 | 2391 | - | 2485 | = | -94 | * | (68 | / | 180) | = | -35.51111104 | ||
| 5 | 33892 | 2427 | - | 2528 | = | -101 | * | (56 | / | 180) | = | -31.42222221 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Altadena Elementary | -84 | ||||||||||||
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 | 34483 | 2394 | - | 2436 | = | -42 | * | (30 | / | 144) | = | -8.74999999 | ||
| 4 | 34485 | 2402 | - | 2485 | = | -83 | * | (52 | / | 144) | = | -29.97222221 | ||
| 5 | 34487 | 2429 | - | 2528 | = | -99 | * | (62 | / | 144) | = | -42.62499995 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Altadena Elementary | -81 | ||||||||||||
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 | 34487 | 2394 | - | 2436 | = | -42 | * | (36 | / | 120) | = | -12.6 | ||
| 4 | 34489 | 2428 | - | 2485 | = | -57 | * | (34 | / | 120) | = | -16.14999998 | ||
| 5 | 34491 | 2412 | - | 2528 | = | -116 | * | (50 | / | 120) | = | -48.33333326 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Altadena Elementary | -77 | ||||||||||||
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 | 34658 | 2405 | - | 2436 | = | -31 | * | (39 | / | 109) | = | -11.09174312 | ||
| 4 | 34659 | 2388 | - | 2485 | = | -97 | * | (32 | / | 109) | = | -28.47706416 | ||
| 5 | 34660 | 2438 | - | 2528 | = | -90 | * | (38 | / | 109) | = | -31.37614677 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Altadena Elementary | -71 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -78 | -84 | -81 | -77 | -71 | -391.0 | -78.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -66.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -90.2
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 | 90% | 84% | 84% | 68% | 67% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Pasadena Unified school district | County of Los Angeles
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.
Altadena Elementary math proficiency
Zero+ meets standard.
86% less $meal
76% less $meal
79% less $meal
66% less $meal
61% 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.