Jerry Voorhis Elementary (Data source)
Source data for Jerry Voorhis 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 | 1041619 | 2380 | - | 2436 | = | -56 | * | (70 | / | 223) | = | -17.57847532 | ||
| 4 | 1041620 | 2410 | - | 2485 | = | -75 | * | (75 | / | 223) | = | -25.22421518 | ||
| 5 | 1041623 | 2450 | - | 2528 | = | -78 | * | (78 | / | 223) | = | -27.28251115 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Jerry Voorhis Elementary | -70 | ||||||||||||
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 | 32708 | 2410 | - | 2436 | = | -26 | * | (72 | / | 216) | = | -8.66666666 | ||
| 4 | 32710 | 2419 | - | 2485 | = | -66 | * | (71 | / | 216) | = | -21.6944444 | ||
| 5 | 32713 | 2482 | - | 2528 | = | -46 | * | (73 | / | 216) | = | -15.54629625 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Jerry Voorhis Elementary | -46 | ||||||||||||
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 | 33286 | 2423 | - | 2436 | = | -13 | * | (71 | / | 217) | = | -4.25345622 | ||
| 4 | 33288 | 2420 | - | 2485 | = | -65 | * | (72 | / | 217) | = | -21.56682028 | ||
| 5 | 33291 | 2461 | - | 2528 | = | -67 | * | (74 | / | 217) | = | -22.84792621 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Jerry Voorhis Elementary | -49 | ||||||||||||
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 | 33307 | 2413 | - | 2436 | = | -23 | * | (64 | / | 199) | = | -7.39698492 | ||
| 4 | 33309 | 2470 | - | 2485 | = | -15 | * | (67 | / | 199) | = | -5.05025126 | ||
| 5 | 33311 | 2458 | - | 2528 | = | -70 | * | (68 | / | 199) | = | -23.91959794 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Jerry Voorhis Elementary | -36 | ||||||||||||
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 | 33478 | 2422 | - | 2436 | = | -14 | * | (67 | / | 197) | = | -4.76142131 | ||
| 4 | 33479 | 2460 | - | 2485 | = | -25 | * | (62 | / | 197) | = | -7.8680203 | ||
| 5 | 33480 | 2498 | - | 2528 | = | -30 | * | (68 | / | 197) | = | -10.35532992 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Jerry Voorhis Elementary | -23 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -70 | -46 | -49 | -36 | -23 | -224.0 | -44.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 6.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -95.8
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 | 98% | 94% | 93% | 96% | 94% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Mountain View Elementary school district | County of Los Angeles
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.
Jerry Voorhis Elementary math proficiency
Zero+ meets standard.
90% less $meal
88% less $meal
87% less $meal
90% less $meal
88% 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.