North Ranchito Elementary (Data source)
Source data for North Ranchito 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 | 697166 | 2376 | - | 2436 | = | -60 | * | (72 | / | 255) | = | -16.94117646 | ||
| 4 | 697167 | 2408 | - | 2485 | = | -77 | * | (91 | / | 255) | = | -27.47843137 | ||
| 5 | 697170 | 2434 | - | 2528 | = | -94 | * | (92 | / | 255) | = | -33.91372542 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for North Ranchito 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 | 22037 | 2378 | - | 2436 | = | -58 | * | (73 | / | 244) | = | -17.35245897 | ||
| 4 | 22038 | 2438 | - | 2485 | = | -47 | * | (76 | / | 244) | = | -14.63934422 | ||
| 5 | 22041 | 2462 | - | 2528 | = | -66 | * | (95 | / | 244) | = | -25.69672129 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for North Ranchito Elementary | -58 | ||||||||||||
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 | 22457 | 2390 | - | 2436 | = | -46 | * | (72 | / | 226) | = | -14.65486722 | ||
| 4 | 22459 | 2438 | - | 2485 | = | -47 | * | (78 | / | 226) | = | -16.22123892 | ||
| 5 | 22462 | 2460 | - | 2528 | = | -68 | * | (76 | / | 226) | = | -22.86725658 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for North Ranchito Elementary | -54 | ||||||||||||
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 | 22447 | 2402 | - | 2436 | = | -34 | * | (59 | / | 210) | = | -9.55238092 | ||
| 4 | 22449 | 2445 | - | 2485 | = | -40 | * | (72 | / | 210) | = | -13.71428568 | ||
| 5 | 22451 | 2475 | - | 2528 | = | -53 | * | (79 | / | 210) | = | -19.93809523 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for North Ranchito Elementary | -43 | ||||||||||||
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 | 22630 | 2401 | - | 2436 | = | -35 | * | (63 | / | 200) | = | -11.025 | ||
| 4 | 22631 | 2459 | - | 2485 | = | -26 | * | (67 | / | 200) | = | -8.71 | ||
| 5 | 22632 | 2468 | - | 2528 | = | -60 | * | (70 | / | 200) | = | -21.0 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for North Ranchito Elementary | -41 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -78 | -58 | -54 | -43 | -41 | -274.0 | -54.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -12.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -96.8
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 | 92% | 85% | 81% | 82% | 85% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
El Rancho 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.
North Ranchito Elementary math proficiency
Zero+ meets standard.
78% less $meal
74% less $meal
69% less $meal
76% 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.