Norma Coombs Elementary (Data source)
Source data for Norma Coombs 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 | 1080436 | 2427 | - | 2436 | = | -9 | * | (83 | / | 212) | = | -3.5235849 | ||
| 4 | 1080439 | 2473 | - | 2485 | = | -12 | * | (72 | / | 212) | = | -4.07547169 | ||
| 5 | 1080440 | 2469 | - | 2528 | = | -59 | * | (57 | / | 212) | = | -15.86320752 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Norma Coombs Elementary | -23 | ||||||||||||
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 | 33857 | 2426 | - | 2436 | = | -10 | * | (78 | / | 224) | = | -3.48214285 | ||
| 4 | 33859 | 2477 | - | 2485 | = | -8 | * | (78 | / | 224) | = | -2.78571428 | ||
| 5 | 33861 | 2507 | - | 2528 | = | -21 | * | (68 | / | 224) | = | -6.37499999 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Norma Coombs Elementary | -13 | ||||||||||||
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 | 34448 | 2410 | - | 2436 | = | -26 | * | (64 | / | 213) | = | -7.81220656 | ||
| 4 | 34450 | 2467 | - | 2485 | = | -18 | * | (72 | / | 213) | = | -6.08450704 | ||
| 5 | 34452 | 2506 | - | 2528 | = | -22 | * | (77 | / | 213) | = | -7.95305163 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Norma Coombs Elementary | -22 | ||||||||||||
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 | 34451 | 2421 | - | 2436 | = | -15 | * | (57 | / | 192) | = | -4.453125 | ||
| 4 | 34452 | 2468 | - | 2485 | = | -17 | * | (64 | / | 192) | = | -5.66666666 | ||
| 5 | 34455 | 2511 | - | 2528 | = | -17 | * | (71 | / | 192) | = | -6.28645832 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Norma Coombs Elementary | -16 | ||||||||||||
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 | 34622 | 2411 | - | 2436 | = | -25 | * | (59 | / | 198) | = | -7.44949493 | ||
| 4 | 34623 | 2447 | - | 2485 | = | -38 | * | (67 | / | 198) | = | -12.85858584 | ||
| 5 | 34624 | 2496 | - | 2528 | = | -32 | * | (72 | / | 198) | = | -11.63636362 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Norma Coombs Elementary | -32 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -23 | -13 | -22 | -16 | -32 | -106.0 | -21.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -0.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -42.2
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 | 69% | 64% | 63% | 65% | 63% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Pasadena 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.
Norma Coombs Elementary math proficiency
Zero+ meets standard.
58% less $meal
51% less $meal
53% less $meal
56% less $meal
55% 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.