Lake Forest Elementary (Data source)
Source data for Lake Forest 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 | 1562436 | 2463 | - | 2436 | = | 27 | * | (133 | / | 528) | = | 6.80113635 | ||
| 4 | 1562439 | 2493 | - | 2485 | = | 8 | * | (130 | / | 528) | = | 1.96969697 | ||
| 5 | 1562440 | 2520 | - | 2528 | = | -8 | * | (139 | / | 528) | = | -2.1060606 | ||
| 6 | 1562443 | 2529 | - | 2552 | = | -23 | * | (126 | / | 528) | = | -5.48863635 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Lake Forest Elementary | 1 | ||||||||||||
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 | 48925 | 2433 | - | 2436 | = | -3 | * | (127 | / | 533) | = | -0.71482176 | ||
| 4 | 48927 | 2481 | - | 2485 | = | -4 | * | (131 | / | 533) | = | -0.98311444 | ||
| 5 | 48928 | 2520 | - | 2528 | = | -8 | * | (134 | / | 533) | = | -2.01125703 | ||
| 6 | 48931 | 2541 | - | 2552 | = | -11 | * | (141 | / | 533) | = | -2.90994371 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Lake Forest Elementary | -7 | ||||||||||||
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 | 50260 | 2457 | - | 2436 | = | 21 | * | (130 | / | 501) | = | 5.44910178 | ||
| 4 | 50263 | 2468 | - | 2485 | = | -17 | * | (117 | / | 501) | = | -3.97005988 | ||
| 5 | 50264 | 2511 | - | 2528 | = | -17 | * | (120 | / | 501) | = | -4.07185629 | ||
| 6 | 50267 | 2552 | - | 2552 | = | 0 | * | (134 | / | 501) | = | 0.0 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Lake Forest Elementary | -3 | ||||||||||||
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 | 50285 | 2438 | - | 2436 | = | 2 | * | (113 | / | 492) | = | 0.45934959 | ||
| 4 | 50286 | 2496 | - | 2485 | = | 11 | * | (130 | / | 492) | = | 2.90650406 | ||
| 5 | 50288 | 2490 | - | 2528 | = | -38 | * | (127 | / | 492) | = | -9.80894308 | ||
| 6 | 50290 | 2534 | - | 2552 | = | -18 | * | (122 | / | 492) | = | -4.46341462 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Lake Forest Elementary | -11 | ||||||||||||
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 | 50478 | 2439 | - | 2436 | = | 3 | * | (107 | / | 479) | = | 0.67014614 | ||
| 4 | 50479 | 2487 | - | 2485 | = | 2 | * | (116 | / | 479) | = | 0.48434238 | ||
| 5 | 50480 | 2530 | - | 2528 | = | 2 | * | (126 | / | 479) | = | 0.52609603 | ||
| 6 | 50481 | 2511 | - | 2552 | = | -41 | * | (130 | / | 479) | = | -11.12734863 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Lake Forest Elementary | -9 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 1 | -7 | -3 | -11 | -9 | -29.0 | -5.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 6.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -17.8
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 | 29% | 33% | 34% | 38% | 36% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Saddleback Valley Unified school district | County of Orange
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 Forest Elementary math proficiency
Zero+ meets standard.
23% less $meal
27% less $meal
27% less $meal
35% less $meal
33% 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.