North Tahoe (Data source)
Source data for North Tahoe
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 |
||
| 5 | 1618785 | 2529 | - | 2528 | = | 1 | * | (106 | / | 415) | = | 0.25542169 | ||
| 6 | 1618786 | 2548 | - | 2552 | = | -4 | * | (102 | / | 415) | = | -0.98313253 | ||
| 7 | 1618789 | 2539 | - | 2567 | = | -28 | * | (101 | / | 415) | = | -6.8144578 | ||
| 8 | 1618790 | 2600 | - | 2586 | = | 14 | * | (106 | / | 415) | = | 3.5759036 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for North Tahoe | -4 | ||||||||||||
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 |
||
| 5 | 50628 | 2522 | - | 2528 | = | -6 | * | (109 | / | 428) | = | -1.52803738 | ||
| 6 | 50631 | 2551 | - | 2552 | = | -1 | * | (108 | / | 428) | = | -0.25233645 | ||
| 7 | 50633 | 2559 | - | 2567 | = | -8 | * | (103 | / | 428) | = | -1.92523364 | ||
| 8 | 50634 | 2594 | - | 2586 | = | 8 | * | (108 | / | 428) | = | 2.01869158 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for North Tahoe | -2 | ||||||||||||
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 |
||
| 5 | 52072 | 2531 | - | 2528 | = | 3 | * | (126 | / | 435) | = | 0.86896552 | ||
| 6 | 52075 | 2538 | - | 2552 | = | -14 | * | (100 | / | 435) | = | -3.2183908 | ||
| 7 | 52077 | 2567 | - | 2567 | = | 0 | * | (101 | / | 435) | = | 0.0 | ||
| 8 | 52079 | 2597 | - | 2586 | = | 11 | * | (108 | / | 435) | = | 2.73103448 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for North Tahoe | 0 | ||||||||||||
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 |
||
| 5 | 52119 | 2541 | - | 2528 | = | 13 | * | (127 | / | 452) | = | 3.65265486 | ||
| 6 | 52120 | 2538 | - | 2552 | = | -14 | * | (126 | / | 452) | = | -3.90265485 | ||
| 7 | 52122 | 2543 | - | 2567 | = | -24 | * | (96 | / | 452) | = | -5.09734512 | ||
| 8 | 52125 | 2613 | - | 2586 | = | 27 | * | (103 | / | 452) | = | 6.15265486 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for North Tahoe | 1 | ||||||||||||
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 |
||
| 5 | 52298 | 2542 | - | 2528 | = | 14 | * | (140 | / | 472) | = | 4.15254237 | ||
| 6 | 52299 | 2542 | - | 2552 | = | -10 | * | (122 | / | 472) | = | -2.58474576 | ||
| 7 | 52300 | 2555 | - | 2567 | = | -12 | * | (115 | / | 472) | = | -2.9237288 | ||
| 8 | 52301 | 2564 | - | 2586 | = | -22 | * | (95 | / | 472) | = | -4.42796609 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for North Tahoe | -6 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -4 | -2 | 0 | 1 | -6 | -11.0 | -2.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 3.25
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -8.75
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 | 47% | 50% | 46% | 48% | 49% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Tahoe-Truckee Unified school district | County of Placer
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.
North Tahoe math proficiency
Zero+ meets standard.
39% less $meal
44% less $meal
37% less $meal
43% 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.
Intermediate/Middle Schools (Public) schools in Tahoe-Truckee Unified (2)
| Alder Creek Middle | North Tahoe |