Lake Elementary (Data source)
Source data for 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 | 2319763 | 2414 | - | 2436 | = | -22 | * | (118 | / | 392) | = | -6.62244898 | ||
| 4 | 2319766 | 2458 | - | 2485 | = | -27 | * | (125 | / | 392) | = | -8.60969388 | ||
| 5 | 2319767 | 2490 | - | 2528 | = | -38 | * | (149 | / | 392) | = | -14.44387752 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Lake Elementary | -30 | ||||||||||||
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 | 70990 | 2453 | - | 2436 | = | 17 | * | (151 | / | 404) | = | 6.35396039 | ||
| 4 | 70991 | 2480 | - | 2485 | = | -5 | * | (128 | / | 404) | = | -1.58415842 | ||
| 5 | 70994 | 2501 | - | 2528 | = | -27 | * | (125 | / | 404) | = | -8.35396038 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Lake Elementary | -4 | ||||||||||||
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 | 72848 | 2444 | - | 2436 | = | 8 | * | (140 | / | 421) | = | 2.66033254 | ||
| 4 | 72850 | 2486 | - | 2485 | = | 1 | * | (157 | / | 421) | = | 0.37292162 | ||
| 5 | 72852 | 2503 | - | 2528 | = | -25 | * | (124 | / | 421) | = | -7.36342043 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Lake Elementary | -4 | ||||||||||||
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 | 72977 | 2451 | - | 2436 | = | 15 | * | (134 | / | 414) | = | 4.85507246 | ||
| 4 | 72980 | 2488 | - | 2485 | = | 3 | * | (125 | / | 414) | = | 0.9057971 | ||
| 5 | 72981 | 2503 | - | 2528 | = | -25 | * | (155 | / | 414) | = | -9.35990338 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Lake Elementary | -4 | ||||||||||||
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 | 73437 | 2442 | - | 2436 | = | 6 | * | (129 | / | 392) | = | 1.97448979 | ||
| 4 | 73438 | 2478 | - | 2485 | = | -7 | * | (133 | / | 392) | = | -2.375 | ||
| 5 | 73439 | 2515 | - | 2528 | = | -13 | * | (130 | / | 392) | = | -4.31122449 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Lake Elementary | -5 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -30 | -4 | -4 | -4 | -5 | -47.0 | -9.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 23.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -42.4
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 | 30% | 28% | 28% | 30% | 28% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Vista Unified school district | County of San Diego
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 Elementary math proficiency
Zero+ meets standard.
23% less $meal
21% less $meal
22% less $meal
25% 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.