Lake Tahoe Environmental Science Magnet (Data source)
Source data for Lake Tahoe Environmental Science Magnet
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 | 276257 | 2462 | - | 2436 | = | 26 | * | (64 | / | 194) | = | 8.57731958 | ||
| 4 | 276258 | 2510 | - | 2485 | = | 25 | * | (65 | / | 194) | = | 8.37628865 | ||
| 5 | 276261 | 2522 | - | 2528 | = | -6 | * | (65 | / | 194) | = | -2.01030928 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Lake Tahoe Environmental Science Magnet | 15 | ||||||||||||
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 | 8166 | 2476 | - | 2436 | = | 40 | * | (67 | / | 193) | = | 13.88601036 | ||
| 4 | 8167 | 2530 | - | 2485 | = | 45 | * | (65 | / | 193) | = | 15.15544038 | ||
| 5 | 8169 | 2532 | - | 2528 | = | 4 | * | (61 | / | 193) | = | 1.2642487 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Lake Tahoe Environmental Science Magnet | 30 | ||||||||||||
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 | 8432 | 2444 | - | 2436 | = | 8 | * | (64 | / | 191) | = | 2.68062827 | ||
| 4 | 8433 | 2517 | - | 2485 | = | 32 | * | (64 | / | 191) | = | 10.72251309 | ||
| 5 | 8435 | 2534 | - | 2528 | = | 6 | * | (63 | / | 191) | = | 1.97905759 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Lake Tahoe Environmental Science Magnet | 15 | ||||||||||||
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 | 8467 | 2450 | - | 2436 | = | 14 | * | (64 | / | 189) | = | 4.74074073 | ||
| 4 | 8470 | 2506 | - | 2485 | = | 21 | * | (59 | / | 189) | = | 6.55555555 | ||
| 5 | 8471 | 2518 | - | 2528 | = | -10 | * | (66 | / | 189) | = | -3.49206349 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Lake Tahoe Environmental Science Magnet | 8 | ||||||||||||
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 | 8521 | 2448 | - | 2436 | = | 12 | * | (65 | / | 188) | = | 4.14893616 | ||
| 4 | 8522 | 2498 | - | 2485 | = | 13 | * | (63 | / | 188) | = | 4.35638297 | ||
| 5 | 8523 | 2512 | - | 2528 | = | -16 | * | (60 | / | 188) | = | -5.10638298 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Lake Tahoe Environmental Science Magnet | 3 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 15 | 30 | 15 | 8 | 3 | 71.0 | 14.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 44.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -15.8
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 | 21% | 21% | 26% | 33% | 29% |
| 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.
Lake Tahoe Environmental Science Magnet math proficiency
Zero+ meets standard.
17% less $meal
17% less $meal
17% less $meal
27% less $meal
22% 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 |