Brooktree Elementary (Data source)
Source data for Brooktree 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 | 2625480 | 2417 | - | 2436 | = | -19 | * | (81 | / | 225) | = | -6.84 | ||
| 4 | 2625483 | 2455 | - | 2485 | = | -30 | * | (76 | / | 225) | = | -10.13333331 | ||
| 5 | 2625484 | 2480 | - | 2528 | = | -48 | * | (68 | / | 225) | = | -14.50666666 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Brooktree Elementary | -31 | ||||||||||||
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 | 80098 | 2431 | - | 2436 | = | -5 | * | (62 | / | 204) | = | -1.51960784 | ||
| 4 | 80100 | 2476 | - | 2485 | = | -9 | * | (73 | / | 204) | = | -3.22058823 | ||
| 5 | 80102 | 2491 | - | 2528 | = | -37 | * | (69 | / | 204) | = | -12.51470588 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Brooktree Elementary | -17 | ||||||||||||
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 | 82290 | 2437 | - | 2436 | = | 1 | * | (69 | / | 202) | = | 0.34158416 | ||
| 4 | 82292 | 2476 | - | 2485 | = | -9 | * | (63 | / | 202) | = | -2.80693069 | ||
| 5 | 82294 | 2503 | - | 2528 | = | -25 | * | (70 | / | 202) | = | -8.66336633 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Brooktree Elementary | -11 | ||||||||||||
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 | 82493 | 2455 | - | 2436 | = | 19 | * | (66 | / | 191) | = | 6.56544502 | ||
| 4 | 82496 | 2477 | - | 2485 | = | -8 | * | (65 | / | 191) | = | -2.72251309 | ||
| 5 | 82497 | 2503 | - | 2528 | = | -25 | * | (60 | / | 191) | = | -7.85340313 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Brooktree Elementary | -4 | ||||||||||||
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 | 83110 | 2433 | - | 2436 | = | -3 | * | (71 | / | 199) | = | -1.07035176 | ||
| 4 | 83111 | 2496 | - | 2485 | = | 11 | * | (61 | / | 199) | = | 3.37185929 | ||
| 5 | 83112 | 2523 | - | 2528 | = | -5 | * | (67 | / | 199) | = | -1.68341709 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Brooktree Elementary | 1 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -31 | -17 | -11 | -4 | 1 | -62.0 | -12.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 23.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -48.4
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 | 35% | 32% | 31% | 30% | 29% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Berryessa Union Elementary 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.
Brooktree Elementary math proficiency
Zero+ meets standard.
25% less $meal
25% less $meal
22% less $meal
27% 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.