Tahoe Lake Elementary (Data source)
Source data for Tahoe Lake 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 | 1618370 | 2398 | - | 2436 | = | -38 | * | (69 | / | 123) | = | -21.31707314 | ||
| 4 | 1618373 | 2450 | - | 2485 | = | -35 | * | (54 | / | 123) | = | -15.36585365 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Tahoe Lake Elementary | -37 | ||||||||||||
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 | 50615 | 2416 | - | 2436 | = | -20 | * | (58 | / | 127) | = | -9.13385826 | ||
| 4 | 50617 | 2451 | - | 2485 | = | -34 | * | (69 | / | 127) | = | -18.47244092 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Tahoe Lake Elementary | -28 | ||||||||||||
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 | 52058 | 2408 | - | 2436 | = | -28 | * | (68 | / | 131) | = | -14.53435113 | ||
| 4 | 52060 | 2476 | - | 2485 | = | -9 | * | (63 | / | 131) | = | -4.32824427 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Tahoe Lake Elementary | -19 | ||||||||||||
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 | 52104 | 2445 | - | 2436 | = | 9 | * | (53 | / | 124) | = | 3.84677419 | ||
| 4 | 52107 | 2469 | - | 2485 | = | -16 | * | (71 | / | 124) | = | -9.16129032 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Tahoe Lake Elementary | -5 | ||||||||||||
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 | 52282 | 2447 | - | 2436 | = | 11 | * | (44 | / | 99) | = | 4.88888888 | ||
| 4 | 52283 | 2509 | - | 2485 | = | 24 | * | (55 | / | 99) | = | 13.33333332 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Tahoe Lake Elementary | 18 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -37 | -28 | -19 | -5 | 18 | -71.0 | -14.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 48.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -77.2
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 | 48% | 50% | 47% | 40% | 41% |
| 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.
Tahoe Lake Elementary math proficiency
Zero+ meets standard.
44% less $meal
42% less $meal
38% less $meal
34% less $meal
36% 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 Tahoe-Truckee Unified (5)
| Donner Trail Elementary | Glenshire Elementary | Kings Beach Elementary |
| Tahoe Lake Elementary | Truckee Elementary |