Tumbleweed Elementary (Data source)
Source data for Tumbleweed 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 | 1059700 | 2359 | - | 2436 | = | -77 | * | (176 | / | 568) | = | -23.85915486 | ||
| 4 | 1059701 | 2430 | - | 2485 | = | -55 | * | (139 | / | 568) | = | -13.459507 | ||
| 5 | 1059704 | 2440 | - | 2528 | = | -88 | * | (120 | / | 568) | = | -18.59154924 | ||
| 6 | 1059705 | 2472 | - | 2552 | = | -80 | * | (133 | / | 568) | = | -18.73239432 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Tumbleweed Elementary | -75 | ||||||||||||
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 | 33257 | 2357 | - | 2436 | = | -79 | * | (143 | / | 542) | = | -20.8431734 | ||
| 4 | 33260 | 2412 | - | 2485 | = | -73 | * | (140 | / | 542) | = | -18.85608856 | ||
| 5 | 33261 | 2454 | - | 2528 | = | -74 | * | (133 | / | 542) | = | -18.15867152 | ||
| 6 | 33264 | 2439 | - | 2552 | = | -113 | * | (126 | / | 542) | = | -26.26937261 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Tumbleweed 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 | 33843 | 2374 | - | 2436 | = | -62 | * | (146 | / | 536) | = | -16.88805966 | ||
| 4 | 33845 | 2415 | - | 2485 | = | -70 | * | (124 | / | 536) | = | -16.19402981 | ||
| 5 | 33846 | 2443 | - | 2528 | = | -85 | * | (148 | / | 536) | = | -23.47014917 | ||
| 6 | 33849 | 2472 | - | 2552 | = | -80 | * | (118 | / | 536) | = | -17.61194024 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Tumbleweed Elementary | -74 | ||||||||||||
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 | 33871 | 2378 | - | 2436 | = | -58 | * | (139 | / | 390) | = | -20.67179485 | ||
| 4 | 33872 | 2419 | - | 2485 | = | -66 | * | (135 | / | 390) | = | -22.84615384 | ||
| 5 | 33875 | 2446 | - | 2528 | = | -82 | * | (116 | / | 390) | = | -24.38974355 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Tumbleweed Elementary | -68 | ||||||||||||
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 | 34052 | 2381 | - | 2436 | = | -55 | * | (121 | / | 390) | = | -17.06410255 | ||
| 4 | 34053 | 2415 | - | 2485 | = | -70 | * | (143 | / | 390) | = | -25.66666662 | ||
| 5 | 34054 | 2465 | - | 2528 | = | -63 | * | (126 | / | 390) | = | -20.35384615 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Tumbleweed Elementary | -63 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -75 | -84 | -74 | -68 | -63 | -364.0 | -72.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -51.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -93.8
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 | 93% | 94% | 93% | 95% | 95% |
| 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.
Tumbleweed Elementary math proficiency
Zero+ meets standard.
86% less $meal
86% less $meal
85% less $meal
91% less $meal
88% 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.