Tahoe Valley Elementary (Data source)
Source data for Tahoe Valley 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 | 277410 | 2394 | - | 2436 | = | -42 | * | (61 | / | 195) | = | -13.1384615 | ||
| 4 | 277413 | 2420 | - | 2485 | = | -65 | * | (67 | / | 195) | = | -22.3333333 | ||
| 5 | 277414 | 2461 | - | 2528 | = | -67 | * | (67 | / | 195) | = | -23.02051278 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Tahoe Valley Elementary | -58 | ||||||||||||
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 | 8202 | 2384 | - | 2436 | = | -52 | * | (59 | / | 188) | = | -16.31914892 | ||
| 4 | 8203 | 2430 | - | 2485 | = | -55 | * | (64 | / | 188) | = | -18.72340421 | ||
| 5 | 8205 | 2465 | - | 2528 | = | -63 | * | (65 | / | 188) | = | -21.78191484 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Tahoe Valley Elementary | -57 | ||||||||||||
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 | 8468 | 2388 | - | 2436 | = | -48 | * | (56 | / | 174) | = | -15.44827584 | ||
| 4 | 8470 | 2410 | - | 2485 | = | -75 | * | (58 | / | 174) | = | -24.99999998 | ||
| 5 | 8472 | 2462 | - | 2528 | = | -66 | * | (60 | / | 174) | = | -22.75862068 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Tahoe Valley Elementary | -63 | ||||||||||||
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 | 8503 | 2385 | - | 2436 | = | -51 | * | (57 | / | 167) | = | -17.40718562 | ||
| 4 | 8506 | 2413 | - | 2485 | = | -72 | * | (52 | / | 167) | = | -22.41916164 | ||
| 5 | 8507 | 2451 | - | 2528 | = | -77 | * | (58 | / | 167) | = | -26.74251495 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Tahoe Valley Elementary | -67 | ||||||||||||
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 | 8557 | 2400 | - | 2436 | = | -36 | * | (58 | / | 163) | = | -12.80981592 | ||
| 4 | 8558 | 2440 | - | 2485 | = | -45 | * | (51 | / | 163) | = | -14.07975458 | ||
| 5 | 8559 | 2448 | - | 2528 | = | -80 | * | (54 | / | 163) | = | -26.50306744 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Tahoe Valley Elementary | -53 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -58 | -57 | -63 | -67 | -53 | -298.0 | -59.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -44.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -74.6
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 | 76% | 69% | 73% | 77% | 72% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Lake Tahoe Unified school district | County of El Dorado
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 Valley Elementary math proficiency
Zero+ meets standard.
61% less $meal
58% less $meal
62% less $meal
73% less $meal
63% 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 Lake Tahoe Unified (4)
| Bijou Community | Lake Tahoe Environmental Science Magnet | Sierra House Elementary |
| Tahoe Valley Elementary |