Timber Point Elementary (Data source)
Source data for Timber Point 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 | 192724 | 2421 | - | 2436 | = | -15 | * | (77 | / | 268) | = | -4.30970148 | ||
| 4 | 192727 | 2462 | - | 2485 | = | -23 | * | (103 | / | 268) | = | -8.83955223 | ||
| 5 | 192728 | 2513 | - | 2528 | = | -15 | * | (88 | / | 268) | = | -4.92537312 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Timber Point Elementary | -18 | ||||||||||||
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 | 5733 | 2411 | - | 2436 | = | -25 | * | (92 | / | 275) | = | -8.36363635 | ||
| 4 | 5736 | 2481 | - | 2485 | = | -4 | * | (81 | / | 275) | = | -1.17818182 | ||
| 5 | 5737 | 2511 | - | 2528 | = | -17 | * | (102 | / | 275) | = | -6.30545453 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Timber Point Elementary | -16 | ||||||||||||
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 | 5868 | 2407 | - | 2436 | = | -29 | * | (77 | / | 252) | = | -8.8611111 | ||
| 4 | 5869 | 2474 | - | 2485 | = | -11 | * | (96 | / | 252) | = | -4.19047618 | ||
| 5 | 5871 | 2513 | - | 2528 | = | -15 | * | (79 | / | 252) | = | -4.70238095 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Timber Point Elementary | -18 | ||||||||||||
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 | 5864 | 2420 | - | 2436 | = | -16 | * | (101 | / | 273) | = | -5.9194139 | ||
| 4 | 5866 | 2471 | - | 2485 | = | -14 | * | (74 | / | 273) | = | -3.79487179 | ||
| 5 | 5868 | 2515 | - | 2528 | = | -13 | * | (98 | / | 273) | = | -4.66666665 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Timber Point Elementary | -14 | ||||||||||||
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 | 5925 | 2421 | - | 2436 | = | -15 | * | (73 | / | 245) | = | -4.46938775 | ||
| 4 | 5926 | 2479 | - | 2485 | = | -6 | * | (97 | / | 245) | = | -2.3755102 | ||
| 5 | 5927 | 2494 | - | 2528 | = | -34 | * | (75 | / | 245) | = | -10.40816323 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Timber Point Elementary | -17 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -18 | -16 | -18 | -14 | -17 | -83.0 | -16.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -13.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -19.6
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 | 18% | 18% | 19% | 20% | 21% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Byron Union Elementary school district | County of Contra Costa
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.
Timber Point Elementary math proficiency
Zero+ meets standard.
15% less $meal
15% less $meal
14% less $meal
17% less $meal
19% 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 Byron Union Elementary (2)
| Discovery Bay Elementary | Timber Point Elementary |