Napa Valley Independent Studies (Data source)
Source data for Napa Valley Independent Studies
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 | 1382269 | 0 | - | 2436 | = | * | (1 | / | 75) | = | ||||
| 4 | 1382270 | 0 | - | 2485 | = | * | (1 | / | 75) | = | ||||
| 5 | 1382273 | 0 | - | 2528 | = | * | (2 | / | 75) | = | ||||
| 6 | 1382274 | 0 | - | 2552 | = | * | (4 | / | 75) | = | ||||
| 7 | 1382277 | 2483 | - | 2567 | = | -84 | * | (12 | / | 75) | = | -13.44 | ||
| 8 | 1382278 | 0 | - | 2586 | = | * | (5 | / | 75) | = | ||||
| 11 | 1382281 | 2504 | - | 2628 | = | -124 | * | (50 | / | 75) | = | -82.66666658 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Napa Valley Independent Studies | -96 | ||||||||||||
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 | 43541 | 0 | - | 2436 | = | * | (1 | / | 85) | = | ||||
| 4 | 43542 | 0 | - | 2485 | = | * | (2 | / | 85) | = | ||||
| 5 | 43544 | 0 | - | 2528 | = | * | (2 | / | 85) | = | ||||
| 6 | 43546 | 0 | - | 2552 | = | * | (3 | / | 85) | = | ||||
| 7 | 43548 | 0 | - | 2567 | = | * | (10 | / | 85) | = | ||||
| 8 | 43550 | 2507 | - | 2586 | = | -79 | * | (18 | / | 85) | = | -16.7294117 | ||
| 11 | 43553 | 2507 | - | 2628 | = | -121 | * | (49 | / | 85) | = | -69.75294115 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Napa Valley Independent Studies | -86 | ||||||||||||
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 | 44609 | 0 | - | 2436 | = | * | (0 | / | 90) | = | ||||
| 5 | 44611 | 0 | - | 2528 | = | * | (0 | / | 90) | = | ||||
| 6 | 44614 | 0 | - | 2552 | = | * | (0 | / | 90) | = | ||||
| 7 | 44616 | 0 | - | 2567 | = | * | (0 | / | 90) | = | ||||
| 8 | 44617 | 2526 | - | 2586 | = | -60 | * | (12 | / | 90) | = | -7.99999998 | ||
| 11 | 44620 | 2496 | - | 2628 | = | -132 | * | (60 | / | 90) | = | -87.99999991 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Napa Valley Independent Studies | -96 | ||||||||||||
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 | 44624 | 0 | - | 2436 | = | * | (0 | / | 80) | = | ||||
| 4 | 44627 | 0 | - | 2485 | = | * | (0 | / | 80) | = | ||||
| 5 | 44628 | 0 | - | 2528 | = | * | (0 | / | 80) | = | ||||
| 6 | 44631 | 0 | - | 2552 | = | * | (0 | / | 80) | = | ||||
| 7 | 44632 | 0 | - | 2567 | = | * | (0 | / | 80) | = | ||||
| 8 | 44635 | 2520 | - | 2586 | = | -66 | * | (11 | / | 80) | = | -9.075 | ||
| 11 | 44636 | 2529 | - | 2628 | = | -99 | * | (48 | / | 80) | = | -59.4 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Napa Valley Independent Studies | -68 | ||||||||||||
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 |
||
| 4 | 44766 | 0 | - | 2485 | = | * | (0 | / | 83) | = | ||||
| 5 | 44767 | 0 | - | 2528 | = | * | (0 | / | 83) | = | ||||
| 6 | 44768 | 0 | - | 2552 | = | * | (10 | / | 83) | = | ||||
| 7 | 44769 | 2546 | - | 2567 | = | -21 | * | (12 | / | 83) | = | -3.03614457 | ||
| 8 | 44770 | 0 | - | 2586 | = | * | (10 | / | 83) | = | ||||
| 11 | 44771 | 2531 | - | 2628 | = | -97 | * | (48 | / | 83) | = | -56.09638554 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Napa Valley Independent Studies | -59 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -96 | -86 | -96 | -68 | -59 | -405.0 | -81.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -33.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -129.0
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 | 22% | 14% | 29% | 37% | 28% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Napa Valley Unified school district | County of Napa
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.
Napa Valley Independent Studies math proficiency
Zero+ meets standard.
20% less $meal
12% less $meal
22% less $meal
32% less $meal
28% 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.
Alternative Schools of Choice schools in Napa Valley Unified (2)
| Napa Valley Independent Studies | New Technology High |