Valleydale Elementary (Data source)
Source data for Valleydale 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 | 623598 | 2418 | - | 2436 | = | -18 | * | (42 | / | 146) | = | -5.17808218 | ||
| 4 | 623599 | 2442 | - | 2485 | = | -43 | * | (54 | / | 146) | = | -15.90410956 | ||
| 5 | 623602 | 2452 | - | 2528 | = | -76 | * | (50 | / | 146) | = | -26.02739723 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Valleydale Elementary | -47 | ||||||||||||
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 | 19929 | 2429 | - | 2436 | = | -7 | * | (36 | / | 135) | = | -1.86666666 | ||
| 4 | 19931 | 2429 | - | 2485 | = | -56 | * | (44 | / | 135) | = | -18.2518518 | ||
| 5 | 19933 | 2465 | - | 2528 | = | -63 | * | (55 | / | 135) | = | -25.66666664 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Valleydale Elementary | -46 | ||||||||||||
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 | 20241 | 2416 | - | 2436 | = | -20 | * | (48 | / | 119) | = | -8.06722688 | ||
| 4 | 20243 | 2433 | - | 2485 | = | -52 | * | (33 | / | 119) | = | -14.42016805 | ||
| 5 | 20245 | 2496 | - | 2528 | = | -32 | * | (38 | / | 119) | = | -10.21848739 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Valleydale Elementary | -33 | ||||||||||||
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 | 20242 | 2416 | - | 2436 | = | -20 | * | (47 | / | 122) | = | -7.70491802 | ||
| 4 | 20244 | 2452 | - | 2485 | = | -33 | * | (46 | / | 122) | = | -12.44262294 | ||
| 5 | 20246 | 2500 | - | 2528 | = | -28 | * | (29 | / | 122) | = | -6.6557377 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Valleydale Elementary | -27 | ||||||||||||
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 | 20420 | 2415 | - | 2436 | = | -21 | * | (41 | / | 143) | = | -6.02097901 | ||
| 4 | 20421 | 2453 | - | 2485 | = | -32 | * | (50 | / | 143) | = | -11.18881117 | ||
| 5 | 20422 | 2481 | - | 2528 | = | -47 | * | (52 | / | 143) | = | -17.09090906 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Valleydale Elementary | -34 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -47 | -46 | -33 | -27 | -34 | -187.0 | -37.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -13.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -61.4
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 | 91% | 89% | 87% | 90% | 90% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Azusa 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.
Valleydale Elementary math proficiency
Zero+ meets standard.
78% less $meal
76% less $meal
74% less $meal
84% less $meal
84% 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.