Lunada Bay Elementary (Data source)
Source data for Lunada Bay 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 | 1067603 | 2495 | - | 2436 | = | 59 | * | (55 | / | 175) | = | 18.54285713 | ||
| 4 | 1067604 | 2515 | - | 2485 | = | 30 | * | (55 | / | 175) | = | 9.42857142 | ||
| 5 | 1067607 | 2556 | - | 2528 | = | 28 | * | (65 | / | 175) | = | 10.39999999 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Lunada Bay Elementary | 38 | ||||||||||||
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 | 33473 | 2467 | - | 2436 | = | 31 | * | (64 | / | 185) | = | 10.7243243 | ||
| 4 | 33475 | 2528 | - | 2485 | = | 43 | * | (62 | / | 185) | = | 14.41081081 | ||
| 5 | 33477 | 2550 | - | 2528 | = | 22 | * | (59 | / | 185) | = | 7.0162162 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Lunada Bay Elementary | 32 | ||||||||||||
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 | 34074 | 2486 | - | 2436 | = | 50 | * | (55 | / | 186) | = | 14.7849462 | ||
| 4 | 34077 | 2484 | - | 2485 | = | -1 | * | (67 | / | 186) | = | -0.36021505 | ||
| 5 | 34078 | 2542 | - | 2528 | = | 14 | * | (64 | / | 186) | = | 4.81720429 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Lunada Bay Elementary | 19 | ||||||||||||
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 | 34079 | 2462 | - | 2436 | = | 26 | * | (60 | / | 181) | = | 8.61878451 | ||
| 4 | 34080 | 2514 | - | 2485 | = | 29 | * | (58 | / | 181) | = | 9.29281765 | ||
| 5 | 34083 | 2509 | - | 2528 | = | -19 | * | (63 | / | 181) | = | -6.61325966 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Lunada Bay Elementary | 11 | ||||||||||||
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 | 34244 | 2474 | - | 2436 | = | 38 | * | (58 | / | 180) | = | 12.24444444 | ||
| 4 | 34245 | 2499 | - | 2485 | = | 14 | * | (59 | / | 180) | = | 4.58888888 | ||
| 5 | 34246 | 2545 | - | 2528 | = | 17 | * | (63 | / | 180) | = | 5.95 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Lunada Bay Elementary | 23 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 38 | 32 | 19 | 11 | 23 | 123.0 | 24.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 54.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -5.4
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 | 1% | 2% | 2% | 8% | 7% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Palos Verdes Peninsula 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.
Lunada Bay Elementary math proficiency
Zero+ meets standard.
1% less $meal
2% less $meal
2% less $meal
7% less $meal
7% 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.