Longfellow Elementary (Data source)
Source data for Longfellow 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 | 1149539 | 2371 | - | 2436 | = | -65 | * | (104 | / | 291) | = | -23.23024054 | ||
| 4 | 1149542 | 2417 | - | 2485 | = | -68 | * | (90 | / | 291) | = | -21.0309278 | ||
| 5 | 1149543 | 2427 | - | 2528 | = | -101 | * | (97 | / | 291) | = | -33.66666663 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Longfellow 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 | 35770 | 2382 | - | 2436 | = | -54 | * | (99 | / | 297) | = | -17.99999998 | ||
| 4 | 35771 | 2420 | - | 2485 | = | -65 | * | (105 | / | 297) | = | -22.97979795 | ||
| 5 | 35774 | 2430 | - | 2528 | = | -98 | * | (93 | / | 297) | = | -30.68686867 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Longfellow Elementary | -72 | ||||||||||||
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 | 36486 | 2397 | - | 2436 | = | -39 | * | (92 | / | 281) | = | -12.76868327 | ||
| 4 | 36487 | 2457 | - | 2485 | = | -28 | * | (91 | / | 281) | = | -9.06761565 | ||
| 5 | 36489 | 2463 | - | 2528 | = | -65 | * | (98 | / | 281) | = | -22.66903912 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Longfellow Elementary | -45 | ||||||||||||
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 | 36471 | 2415 | - | 2436 | = | -21 | * | (97 | / | 274) | = | -7.43430656 | ||
| 4 | 36473 | 2452 | - | 2485 | = | -33 | * | (89 | / | 274) | = | -10.71897809 | ||
| 5 | 36475 | 2478 | - | 2528 | = | -50 | * | (88 | / | 274) | = | -16.05839415 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Longfellow Elementary | -34 | ||||||||||||
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 | 36634 | 2433 | - | 2436 | = | -3 | * | (82 | / | 262) | = | -0.9389313 | ||
| 4 | 36635 | 2482 | - | 2485 | = | -3 | * | (94 | / | 262) | = | -1.07633588 | ||
| 5 | 36636 | 2476 | - | 2528 | = | -52 | * | (86 | / | 262) | = | -17.06870225 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Longfellow Elementary | -19 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -78 | -72 | -45 | -34 | -19 | -248.0 | -49.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 25.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -124.6
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 | 82% | 82% | 83% | 77% | 81% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Whittier City Elementary 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.
Longfellow Elementary math proficiency
Zero+ meets standard.
70% less $meal
74% less $meal
71% less $meal
68% less $meal
75% 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.