Merwin Elementary (Data source)
Source data for Merwin 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 | 667553 | 2431 | - | 2436 | = | -5 | * | (51 | / | 194) | = | -1.31443299 | ||
| 4 | 667554 | 2420 | - | 2485 | = | -65 | * | (70 | / | 194) | = | -23.45360823 | ||
| 5 | 667556 | 2464 | - | 2528 | = | -64 | * | (73 | / | 194) | = | -24.08247418 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Merwin Elementary | -49 | ||||||||||||
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 | 21173 | 2440 | - | 2436 | = | 4 | * | (56 | / | 169) | = | 1.32544378 | ||
| 4 | 21175 | 2430 | - | 2485 | = | -55 | * | (49 | / | 169) | = | -15.94674554 | ||
| 5 | 21177 | 2460 | - | 2528 | = | -68 | * | (64 | / | 169) | = | -25.75147923 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Merwin Elementary | -40 | ||||||||||||
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 | 21541 | 2455 | - | 2436 | = | 19 | * | (72 | / | 181) | = | 7.55801105 | ||
| 4 | 21543 | 2441 | - | 2485 | = | -44 | * | (58 | / | 181) | = | -14.09944747 | ||
| 5 | 21545 | 2470 | - | 2528 | = | -58 | * | (51 | / | 181) | = | -16.34254139 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Merwin Elementary | -23 | ||||||||||||
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 | 21521 | 2460 | - | 2436 | = | 24 | * | (78 | / | 251) | = | 7.45816733 | ||
| 4 | 21523 | 2457 | - | 2485 | = | -28 | * | (88 | / | 251) | = | -9.81673305 | ||
| 5 | 21525 | 2466 | - | 2528 | = | -62 | * | (85 | / | 251) | = | -20.99601592 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Merwin Elementary | -23 | ||||||||||||
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 | 21694 | 2477 | - | 2436 | = | 41 | * | (74 | / | 239) | = | 12.69456063 | ||
| 4 | 21695 | 2470 | - | 2485 | = | -15 | * | (82 | / | 239) | = | -5.14644351 | ||
| 5 | 21696 | 2505 | - | 2528 | = | -23 | * | (83 | / | 239) | = | -7.98744768 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Merwin Elementary | 0 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -49 | -40 | -23 | -23 | 0 | -135.0 | -27.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 2.25
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -69.75
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 | 82% | 81% | 77% | 79% | 81% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Covina-Valley 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.
Merwin Elementary math proficiency
Zero+ meets standard.
68% less $meal
67% less $meal
66% less $meal
71% 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 Covina-Valley Unified (9)
| Barranca Elementary | Ben Lomond Elementary | Cypress Elementary |
| Grovecenter Elementary | Manzanita Elementary | Merwin Elementary |
| Mesa Elementary | Rowland Avenue Elementary | Workman Avenue Elementary |