Shell Beach Elementary (Data source)
Source data for Shell Beach 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 | 2488658 | 2440 | - | 2436 | = | 4 | * | (62 | / | 244) | = | 1.01639344 | ||
| 4 | 2488659 | 2513 | - | 2485 | = | 28 | * | (52 | / | 244) | = | 5.96721311 | ||
| 5 | 2488662 | 2514 | - | 2528 | = | -14 | * | (65 | / | 244) | = | -3.72950819 | ||
| 6 | 2488663 | 2573 | - | 2552 | = | 21 | * | (65 | / | 244) | = | 5.59426228 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Shell Beach Elementary | 9 | ||||||||||||
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 | 75874 | 2421 | - | 2436 | = | -15 | * | (61 | / | 241) | = | -3.7966805 | ||
| 4 | 75875 | 2471 | - | 2485 | = | -14 | * | (61 | / | 241) | = | -3.54356846 | ||
| 5 | 75877 | 2536 | - | 2528 | = | 8 | * | (57 | / | 241) | = | 1.89211618 | ||
| 6 | 75880 | 2584 | - | 2552 | = | 32 | * | (62 | / | 241) | = | 8.23236512 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Shell Beach Elementary | 3 | ||||||||||||
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 | 77906 | 2459 | - | 2436 | = | 23 | * | (59 | / | 237) | = | 5.72573838 | ||
| 4 | 77909 | 2470 | - | 2485 | = | -15 | * | (61 | / | 237) | = | -3.86075949 | ||
| 5 | 77910 | 2497 | - | 2528 | = | -31 | * | (59 | / | 237) | = | -7.71729956 | ||
| 6 | 77912 | 2584 | - | 2552 | = | 32 | * | (58 | / | 237) | = | 7.83122362 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Shell Beach Elementary | 2 | ||||||||||||
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 | 78070 | 2432 | - | 2436 | = | -4 | * | (50 | / | 226) | = | -0.88495575 | ||
| 4 | 78071 | 2497 | - | 2485 | = | 12 | * | (58 | / | 226) | = | 3.07964602 | ||
| 5 | 78074 | 2489 | - | 2528 | = | -39 | * | (59 | / | 226) | = | -10.18141589 | ||
| 6 | 78075 | 2551 | - | 2552 | = | -1 | * | (59 | / | 226) | = | -0.26106195 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Shell Beach Elementary | -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 | 78600 | 2473 | - | 2436 | = | 37 | * | (53 | / | 213) | = | 9.20657277 | ||
| 4 | 78601 | 2471 | - | 2485 | = | -14 | * | (47 | / | 213) | = | -3.08920186 | ||
| 5 | 78602 | 2535 | - | 2528 | = | 7 | * | (56 | / | 213) | = | 1.84037559 | ||
| 6 | 78603 | 2536 | - | 2552 | = | -16 | * | (57 | / | 213) | = | -4.28169013 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Shell Beach Elementary | 4 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 9 | 3 | 2 | -8 | 4 | 10.0 | 2.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 20.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -16.0
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 | 24% | 26% | 21% | 27% | 27% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Lucia Mar Unified school district | County of San Luis Obispo
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.
Shell Beach Elementary math proficiency
Zero+ meets standard.
18% less $meal
21% less $meal
15% less $meal
24% 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.