La Crescenta Elementary (Data source)
Source data for La Crescenta 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 | 710110 | 2466 | - | 2436 | = | 30 | * | (52 | / | 296) | = | 5.27027025 | ||
| 4 | 710112 | 2489 | - | 2485 | = | 4 | * | (65 | / | 296) | = | 0.87837838 | ||
| 5 | 710113 | 2536 | - | 2528 | = | 8 | * | (90 | / | 296) | = | 2.43243243 | ||
| 6 | 710116 | 2556 | - | 2552 | = | 4 | * | (89 | / | 296) | = | 1.2027027 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for La Crescenta Elementary | 10 | ||||||||||||
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 | 22419 | 2466 | - | 2436 | = | 30 | * | (65 | / | 287) | = | 6.79442508 | ||
| 4 | 22420 | 2513 | - | 2485 | = | 28 | * | (57 | / | 287) | = | 5.56097559 | ||
| 5 | 22423 | 2527 | - | 2528 | = | -1 | * | (66 | / | 287) | = | -0.22996516 | ||
| 6 | 22425 | 2560 | - | 2552 | = | 8 | * | (99 | / | 287) | = | 2.75958188 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for La Crescenta Elementary | 15 | ||||||||||||
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 | 22850 | 2432 | - | 2436 | = | -4 | * | (54 | / | 253) | = | -0.85375494 | ||
| 4 | 22852 | 2496 | - | 2485 | = | 11 | * | (66 | / | 253) | = | 2.86956522 | ||
| 5 | 22854 | 2540 | - | 2528 | = | 12 | * | (61 | / | 253) | = | 2.89328063 | ||
| 6 | 22856 | 2568 | - | 2552 | = | 16 | * | (72 | / | 253) | = | 4.55335968 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for La Crescenta Elementary | 9 | ||||||||||||
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 | 22847 | 2439 | - | 2436 | = | 3 | * | (64 | / | 262) | = | 0.73282443 | ||
| 4 | 22849 | 2479 | - | 2485 | = | -6 | * | (62 | / | 262) | = | -1.41984733 | ||
| 5 | 22851 | 2550 | - | 2528 | = | 22 | * | (69 | / | 262) | = | 5.79389312 | ||
| 6 | 22853 | 2566 | - | 2552 | = | 14 | * | (67 | / | 262) | = | 3.58015266 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for La Crescenta Elementary | 9 | ||||||||||||
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 | 23029 | 2461 | - | 2436 | = | 25 | * | (75 | / | 283) | = | 6.62544168 | ||
| 4 | 23030 | 2493 | - | 2485 | = | 8 | * | (65 | / | 283) | = | 1.83745582 | ||
| 5 | 23031 | 2521 | - | 2528 | = | -7 | * | (64 | / | 283) | = | -1.58303886 | ||
| 6 | 23032 | 2577 | - | 2552 | = | 25 | * | (79 | / | 283) | = | 6.97879858 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for La Crescenta Elementary | 14 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 10 | 15 | 9 | 9 | 14 | 57.0 | 11.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 17.4
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 | 28% | 29% | 30% | 35% | 38% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Glendale 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.
La Crescenta Elementary math proficiency
Zero+ meets standard.
20% less $meal
21% less $meal
22% less $meal
29% less $meal
30% 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.