Verde Elementary (Data source)
Source data for Verde 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 | 242281 | 2341 | - | 2436 | = | -95 | * | (47 | / | 163) | = | -27.39263801 | ||
| 4 | 242284 | 2403 | - | 2485 | = | -82 | * | (46 | / | 163) | = | -23.14110422 | ||
| 5 | 242285 | 2421 | - | 2528 | = | -107 | * | (39 | / | 163) | = | -25.60122692 | ||
| 6 | 242288 | 2465 | - | 2552 | = | -87 | * | (31 | / | 163) | = | -16.54601226 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Verde Elementary | -93 | ||||||||||||
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 | 7101 | 2336 | - | 2436 | = | -100 | * | (59 | / | 174) | = | -33.9080459 | ||
| 4 | 7104 | 2378 | - | 2485 | = | -107 | * | (40 | / | 174) | = | -24.5977011 | ||
| 5 | 7105 | 2412 | - | 2528 | = | -116 | * | (43 | / | 174) | = | -28.66666658 | ||
| 6 | 7107 | 2434 | - | 2552 | = | -118 | * | (32 | / | 174) | = | -21.70114931 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Verde Elementary | -109 | ||||||||||||
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 | 7314 | 2357 | - | 2436 | = | -79 | * | (47 | / | 190) | = | -19.54210526 | ||
| 4 | 7316 | 2382 | - | 2485 | = | -103 | * | (57 | / | 190) | = | -30.9 | ||
| 5 | 7317 | 2380 | - | 2528 | = | -148 | * | (42 | / | 190) | = | -32.71578939 | ||
| 6 | 7320 | 2440 | - | 2552 | = | -112 | * | (44 | / | 190) | = | -25.93684206 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Verde Elementary | -109 | ||||||||||||
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 | 7332 | 2379 | - | 2436 | = | -57 | * | (45 | / | 170) | = | -15.08823527 | ||
| 4 | 7333 | 2374 | - | 2485 | = | -111 | * | (45 | / | 170) | = | -29.3823529 | ||
| 5 | 7336 | 2390 | - | 2528 | = | -138 | * | (47 | / | 170) | = | -38.15294114 | ||
| 6 | 7337 | 2420 | - | 2552 | = | -132 | * | (33 | / | 170) | = | -25.6235294 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Verde Elementary | -108 | ||||||||||||
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 | 7383 | 2361 | - | 2436 | = | -75 | * | (36 | / | 194) | = | -13.91752575 | ||
| 4 | 7384 | 2393 | - | 2485 | = | -92 | * | (47 | / | 194) | = | -22.28865977 | ||
| 5 | 7385 | 2403 | - | 2528 | = | -125 | * | (40 | / | 194) | = | -25.77319588 | ||
| 6 | 7386 | 2418 | - | 2552 | = | -134 | * | (42 | / | 194) | = | -29.01030923 | ||
| 7 | 7387 | 2415 | - | 2567 | = | -152 | * | (29 | / | 194) | = | -22.72164947 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Verde Elementary | -114 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -93 | -109 | -109 | -108 | -114 | -533.0 | -106.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -85.6
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -127.6
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 | 99% | 98% | 99% | 97% | 97% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
West Contra Costa Unified 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.
Verde Elementary math proficiency
Zero+ meets standard.
94% less $meal
94% less $meal
96% less $meal
93% less $meal
93% 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.