Chabot Elementary (Data source)
Source data for Chabot 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 | 22802 | 2467 | - | 2436 | = | 31 | * | (75 | / | 228) | = | 10.19736841 | ||
| 4 | 22803 | 2480 | - | 2485 | = | -5 | * | (75 | / | 228) | = | -1.64473684 | ||
| 5 | 22806 | 2499 | - | 2528 | = | -29 | * | (78 | / | 228) | = | -9.92105263 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Chabot Elementary | -1 | ||||||||||||
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 | 609 | 2482 | - | 2436 | = | 46 | * | (75 | / | 231) | = | 14.9350649 | ||
| 4 | 612 | 2508 | - | 2485 | = | 23 | * | (80 | / | 231) | = | 7.96536796 | ||
| 5 | 614 | 2536 | - | 2528 | = | 8 | * | (76 | / | 231) | = | 2.63203463 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Chabot Elementary | 26 | ||||||||||||
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 | 651 | 2455 | - | 2436 | = | 19 | * | (75 | / | 233) | = | 6.11587983 | ||
| 4 | 653 | 2504 | - | 2485 | = | 19 | * | (77 | / | 233) | = | 6.27896996 | ||
| 5 | 655 | 2553 | - | 2528 | = | 25 | * | (81 | / | 233) | = | 8.6909871 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Chabot Elementary | 21 | ||||||||||||
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 | 671 | 2505 | - | 2436 | = | 69 | * | (75 | / | 237) | = | 21.83544302 | ||
| 4 | 673 | 2498 | - | 2485 | = | 13 | * | (82 | / | 237) | = | 4.49789029 | ||
| 5 | 675 | 2551 | - | 2528 | = | 23 | * | (80 | / | 237) | = | 7.76371307 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Chabot Elementary | 34 | ||||||||||||
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 | 701 | 2488 | - | 2436 | = | 52 | * | (74 | / | 233) | = | 16.51502143 | ||
| 4 | 702 | 2531 | - | 2485 | = | 46 | * | (80 | / | 233) | = | 15.79399139 | ||
| 5 | 703 | 2537 | - | 2528 | = | 9 | * | (79 | / | 233) | = | 3.05150214 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Chabot Elementary | 35 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -1 | 26 | 21 | 34 | 35 | 115.0 | 23.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 65.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -19.0
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 | 14% | 18% | 21% | 20% | 21% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Castro Valley Unified school district | County of Alameda
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.
Chabot Elementary math proficiency
Zero+ meets standard.
11% less $meal
13% less $meal
15% less $meal
15% less $meal
18% 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.
Elementary School (Public) schools in Castro Valley Unified (9)
| Castro Valley Elementary | Chabot Elementary | Independent Elementary |
| Jensen Ranch Elementary | Marshall Elementary | Palomares Elementary |
| Proctor Elementary | Stanton Elementary | Vannoy Elementary |