Del Rey Elementary (Data source)
Source data for Del Rey 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 | 112387 | 2396 | - | 2436 | = | -40 | * | (87 | / | 263) | = | -13.23193916 | ||
| 4 | 112388 | 2440 | - | 2485 | = | -45 | * | (100 | / | 263) | = | -17.11026612 | ||
| 5 | 112391 | 2449 | - | 2528 | = | -79 | * | (76 | / | 263) | = | -22.82889734 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Del Rey Elementary | -53 | ||||||||||||
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 | 3136 | 2380 | - | 2436 | = | -56 | * | (88 | / | 270) | = | -18.2518518 | ||
| 4 | 3137 | 2433 | - | 2485 | = | -52 | * | (97 | / | 270) | = | -18.68148147 | ||
| 5 | 3140 | 2439 | - | 2528 | = | -89 | * | (85 | / | 270) | = | -28.01851845 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Del Rey Elementary | -65 | ||||||||||||
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 | 3248 | 2386 | - | 2436 | = | -50 | * | (73 | / | 239) | = | -15.2719665 | ||
| 4 | 3250 | 2431 | - | 2485 | = | -54 | * | (86 | / | 239) | = | -19.43096229 | ||
| 5 | 3251 | 2436 | - | 2528 | = | -92 | * | (80 | / | 239) | = | -30.79497904 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Del Rey Elementary | -65 | ||||||||||||
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 | 3244 | 2400 | - | 2436 | = | -36 | * | (99 | / | 259) | = | -13.76061775 | ||
| 4 | 3246 | 2431 | - | 2485 | = | -54 | * | (82 | / | 259) | = | -17.09652506 | ||
| 5 | 3248 | 2437 | - | 2528 | = | -91 | * | (78 | / | 259) | = | -27.40540539 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Del Rey Elementary | -58 | ||||||||||||
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 | 3273 | 2385 | - | 2436 | = | -51 | * | (82 | / | 256) | = | -16.3359375 | ||
| 4 | 3274 | 2453 | - | 2485 | = | -32 | * | (95 | / | 256) | = | -11.875 | ||
| 5 | 3275 | 2448 | - | 2528 | = | -80 | * | (79 | / | 256) | = | -24.6875 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Del Rey Elementary | -53 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -53 | -65 | -65 | -58 | -53 | -294.0 | -58.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -40.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -76.8
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 | 63% | 67% | 62% | 62% | 57% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
San Lorenzo Unified school district | County of Alameda
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.
Del Rey Elementary math proficiency
Zero+ meets standard.
50% less $meal
51% less $meal
50% less $meal
56% less $meal
49% 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 San Lorenzo Unified (9)
| Bay Elementary | Colonial Acres Elementary | Corvallis Elementary |
| Dayton Elementary | Del Rey Elementary | Grant Elementary |
| Hesperian Elementary | Hillside Elementary | Lorenzo Manor Elementary |