Palm Tree Elementary (Data source)
Source data for Palm Tree 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 | 1061810 | 2365 | - | 2436 | = | -71 | * | (108 | / | 432) | = | -17.75 | ||
| 4 | 1061813 | 2420 | - | 2485 | = | -65 | * | (113 | / | 432) | = | -17.00231481 | ||
| 5 | 1061814 | 2448 | - | 2528 | = | -80 | * | (108 | / | 432) | = | -20.0 | ||
| 6 | 1061817 | 2482 | - | 2552 | = | -70 | * | (103 | / | 432) | = | -16.68981475 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Palm Tree 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 | 33313 | 2386 | - | 2436 | = | -50 | * | (97 | / | 413) | = | -11.7433414 | ||
| 4 | 33315 | 2434 | - | 2485 | = | -51 | * | (104 | / | 413) | = | -12.84261498 | ||
| 5 | 33317 | 2457 | - | 2528 | = | -71 | * | (105 | / | 413) | = | -18.05084745 | ||
| 6 | 33320 | 2480 | - | 2552 | = | -72 | * | (107 | / | 413) | = | -18.65375302 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Palm Tree Elementary | -61 | ||||||||||||
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 | 33904 | 2388 | - | 2436 | = | -48 | * | (88 | / | 369) | = | -11.44715443 | ||
| 4 | 33906 | 2437 | - | 2485 | = | -48 | * | (86 | / | 369) | = | -11.18699184 | ||
| 5 | 33909 | 2451 | - | 2528 | = | -77 | * | (104 | / | 369) | = | -21.70189699 | ||
| 6 | 33911 | 2499 | - | 2552 | = | -53 | * | (91 | / | 369) | = | -13.0704607 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Palm Tree Elementary | -57 | ||||||||||||
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 | 33924 | 2389 | - | 2436 | = | -47 | * | (97 | / | 272) | = | -16.76102941 | ||
| 4 | 33926 | 2442 | - | 2485 | = | -43 | * | (90 | / | 272) | = | -14.22794114 | ||
| 5 | 33928 | 2452 | - | 2528 | = | -76 | * | (85 | / | 272) | = | -23.75 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Palm Tree Elementary | -55 | ||||||||||||
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 | 34106 | 2396 | - | 2436 | = | -40 | * | (86 | / | 286) | = | -12.027972 | ||
| 4 | 34107 | 2440 | - | 2485 | = | -45 | * | (104 | / | 286) | = | -16.36363634 | ||
| 5 | 34108 | 2467 | - | 2528 | = | -61 | * | (96 | / | 286) | = | -20.47552444 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Palm Tree Elementary | -49 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -71 | -61 | -57 | -55 | -49 | -293.0 | -58.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -34.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -82.6
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 | 85% | 90% | 88% | 90% | 93% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Palmdale 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.
Palm Tree Elementary math proficiency
Zero+ meets standard.
76% less $meal
78% less $meal
78% less $meal
84% less $meal
84% 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.