Zela Davis (Data source)
Source data for Zela Davis
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 | 722674 | 2401 | - | 2436 | = | -35 | * | (190 | / | 579) | = | -11.48531951 | ||
4 | 722675 | 2440 | - | 2485 | = | -45 | * | (204 | / | 579) | = | -15.85492227 | ||
5 | 722678 | 2467 | - | 2528 | = | -61 | * | (185 | / | 579) | = | -19.49050083 | ||
Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Zela Davis | -47 |
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 | 22759 | 2399 | - | 2436 | = | -37 | * | (210 | / | 602) | = | -12.90697673 | ||
4 | 22760 | 2440 | - | 2485 | = | -45 | * | (188 | / | 602) | = | -14.05315611 | ||
5 | 22763 | 2463 | - | 2528 | = | -65 | * | (204 | / | 602) | = | -22.02657802 | ||
Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Zela Davis | -49 |
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 | 23192 | 2408 | - | 2436 | = | -28 | * | (184 | / | 574) | = | -8.97560975 | ||
4 | 23194 | 2454 | - | 2485 | = | -31 | * | (201 | / | 574) | = | -10.8554007 | ||
5 | 23196 | 2476 | - | 2528 | = | -52 | * | (189 | / | 574) | = | -17.12195118 | ||
Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Zela Davis | -37 |
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 | 23195 | 2427 | - | 2436 | = | -9 | * | (181 | / | 568) | = | -2.86795774 | ||
4 | 23197 | 2441 | - | 2485 | = | -44 | * | (192 | / | 568) | = | -14.87323944 | ||
5 | 23199 | 2493 | - | 2528 | = | -35 | * | (195 | / | 568) | = | -12.01584507 | ||
Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Zela Davis | -30 |
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 | 23368 | 2413 | - | 2436 | = | -23 | * | (185 | / | 552) | = | -7.70833332 | ||
4 | 23369 | 2448 | - | 2485 | = | -37 | * | (180 | / | 552) | = | -12.06521737 | ||
5 | 23370 | 2473 | - | 2528 | = | -55 | * | (187 | / | 552) | = | -18.63224633 | ||
Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Zela Davis | -38 |
Last steps
Compute the average
2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
---|---|---|---|---|---|---|
-47 | -49 | -37 | -30 | -38 | -201.0 | -40.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -19.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -61.2
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 | 91% | 90% | 87% | 91% | 90% |
Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Hawthorne school district County of Los Angeles
THIS chart shows what the school system "wants"
PLUS a "special" or "outside" cause of variation, parent education.
NOT what teachers want.
NOT what principals want.
NOT what parents want.
Zela Davis math proficiency
Zero+ meets standard.
84% less $meal
82% less $meal
80% less $meal
86% less $meal
83% 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 Hawthorne (7)
Eucalyptus | Jefferson | Kornblum |
Ramona | Washington | York |
Zela Davis |