Braly Elementary (Data source)
Source data for Braly 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 | 2720376 | 2422 | - | 2436 | = | -14 | * | (64 | / | 188) | = | -4.76595743 | ||
| 4 | 2720377 | 2465 | - | 2485 | = | -20 | * | (66 | / | 188) | = | -7.02127658 | ||
| 5 | 2720380 | 2481 | - | 2528 | = | -47 | * | (58 | / | 188) | = | -14.49999999 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Braly Elementary | -26 | ||||||||||||
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 | 82774 | 2437 | - | 2436 | = | 1 | * | (66 | / | 185) | = | 0.35675676 | ||
| 4 | 82777 | 2474 | - | 2485 | = | -11 | * | (53 | / | 185) | = | -3.15135135 | ||
| 5 | 82779 | 2522 | - | 2528 | = | -6 | * | (66 | / | 185) | = | -2.14054054 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Braly Elementary | -5 | ||||||||||||
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 | 85084 | 2457 | - | 2436 | = | 21 | * | (54 | / | 167) | = | 6.79041915 | ||
| 4 | 85086 | 2476 | - | 2485 | = | -9 | * | (65 | / | 167) | = | -3.502994 | ||
| 5 | 85089 | 2507 | - | 2528 | = | -21 | * | (48 | / | 167) | = | -6.03592813 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Braly Elementary | -3 | ||||||||||||
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 | 85303 | 2471 | - | 2436 | = | 35 | * | (52 | / | 166) | = | 10.96385542 | ||
| 4 | 85305 | 2500 | - | 2485 | = | 15 | * | (54 | / | 166) | = | 4.87951806 | ||
| 5 | 85307 | 2529 | - | 2528 | = | 1 | * | (60 | / | 166) | = | 0.36144578 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Braly 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 | 85898 | 2453 | - | 2436 | = | 17 | * | (57 | / | 157) | = | 6.17197451 | ||
| 4 | 85899 | 2522 | - | 2485 | = | 37 | * | (53 | / | 157) | = | 12.49044583 | ||
| 5 | 85900 | 2523 | - | 2528 | = | -5 | * | (47 | / | 157) | = | -1.49681529 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Braly Elementary | 17 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -26 | -5 | -3 | 16 | 17 | -1.0 | -0.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 50.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -51.2
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 | 31% | 31% | 30% | 31% | 26% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Santa Clara Unified school district | County of Santa Clara
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.
Braly Elementary math proficiency
Zero+ meets standard.
22% less $meal
23% less $meal
23% less $meal
25% less $meal
23% 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.