Woodbridge (Data source)
Source data for Woodbridge
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 | 2404719 | 2433 | - | 2436 | = | -3 | * | (49 | / | 240) | = | -0.6125 | ||
4 | 2404720 | 2466 | - | 2485 | = | -19 | * | (66 | / | 240) | = | -5.225 | ||
5 | 2404723 | 2473 | - | 2528 | = | -55 | * | (63 | / | 240) | = | -14.4375 | ||
6 | 2404724 | 2489 | - | 2552 | = | -63 | * | (62 | / | 240) | = | -16.27499998 | ||
Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Woodbridge | -37 |
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 | 73426 | 2428 | - | 2436 | = | -8 | * | (59 | / | 237) | = | -1.99156118 | ||
4 | 73428 | 2467 | - | 2485 | = | -18 | * | (50 | / | 237) | = | -3.79746835 | ||
5 | 73429 | 2485 | - | 2528 | = | -43 | * | (67 | / | 237) | = | -12.1561181 | ||
6 | 73431 | 2464 | - | 2552 | = | -88 | * | (61 | / | 237) | = | -22.64978901 | ||
Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Woodbridge | -41 |
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 | 75382 | 2416 | - | 2436 | = | -20 | * | (63 | / | 237) | = | -5.31645568 | ||
4 | 75384 | 2460 | - | 2485 | = | -25 | * | (60 | / | 237) | = | -6.3291139 | ||
5 | 75386 | 2468 | - | 2528 | = | -60 | * | (54 | / | 237) | = | -13.67088606 | ||
6 | 75389 | 2472 | - | 2552 | = | -80 | * | (60 | / | 237) | = | -20.25316448 | ||
Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Woodbridge | -46 |
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 | 75577 | 2434 | - | 2436 | = | -2 | * | (44 | / | 220) | = | -0.4 | ||
4 | 75580 | 2458 | - | 2485 | = | -27 | * | (71 | / | 220) | = | -8.71363634 | ||
5 | 75581 | 2464 | - | 2528 | = | -64 | * | (55 | / | 220) | = | -16.0 | ||
6 | 75584 | 2481 | - | 2552 | = | -71 | * | (50 | / | 220) | = | -16.13636362 | ||
Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Woodbridge | -41 |
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 | 76104 | 2444 | - | 2436 | = | 8 | * | (54 | / | 224) | = | 1.92857142 | ||
4 | 76105 | 2460 | - | 2485 | = | -25 | * | (46 | / | 224) | = | -5.13392855 | ||
5 | 76106 | 2481 | - | 2528 | = | -47 | * | (72 | / | 224) | = | -15.10714284 | ||
6 | 76107 | 2503 | - | 2552 | = | -49 | * | (52 | / | 224) | = | -11.37499999 | ||
Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Woodbridge | -30 |
Last steps
Compute the average
2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
---|---|---|---|---|---|---|
-37 | -41 | -46 | -41 | -30 | -195.0 | -39.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -24.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -54.0
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 | 72% | 73% | 70% | 77% | 75% |
Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Lodi Unified school district County of San Joaquin
THIS chart shows what the school system "wants"
PLUS a "special" or "outside" cause of variation, parent education.
NOT what teachers want.
NOT what principals want.
NOT what parents want.
Woodbridge math proficiency
Zero+ meets standard.
60% less $meal
62% less $meal
57% less $meal
69% less $meal
67% 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.