Westmont Elementary (Data source)
Source data for Westmont 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 | 1096283 | 2398 | - | 2436 | = | -38 | * | (56 | / | 222) | = | -9.58558558 | ||
| 4 | 1096284 | 2454 | - | 2485 | = | -31 | * | (55 | / | 222) | = | -7.68018016 | ||
| 5 | 1096287 | 2469 | - | 2528 | = | -59 | * | (56 | / | 222) | = | -14.88288287 | ||
| 6 | 1096288 | 2511 | - | 2552 | = | -41 | * | (55 | / | 222) | = | -10.15765763 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Westmont Elementary | -42 | ||||||||||||
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 | 34315 | 2421 | - | 2436 | = | -15 | * | (52 | / | 214) | = | -3.64485981 | ||
| 4 | 34318 | 2440 | - | 2485 | = | -45 | * | (51 | / | 214) | = | -10.72429907 | ||
| 5 | 34319 | 2489 | - | 2528 | = | -39 | * | (53 | / | 214) | = | -9.65887849 | ||
| 6 | 34322 | 2512 | - | 2552 | = | -40 | * | (58 | / | 214) | = | -10.84112148 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Westmont Elementary | -35 | ||||||||||||
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 | 34928 | 2410 | - | 2436 | = | -26 | * | (51 | / | 209) | = | -6.34449759 | ||
| 4 | 34930 | 2447 | - | 2485 | = | -38 | * | (54 | / | 209) | = | -9.81818179 | ||
| 5 | 34932 | 2484 | - | 2528 | = | -44 | * | (52 | / | 209) | = | -10.94736839 | ||
| 6 | 34934 | 2529 | - | 2552 | = | -23 | * | (52 | / | 209) | = | -5.72248802 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Westmont Elementary | -33 | ||||||||||||
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 | 34938 | 2425 | - | 2436 | = | -11 | * | (50 | / | 213) | = | -2.58215962 | ||
| 4 | 34940 | 2462 | - | 2485 | = | -23 | * | (51 | / | 213) | = | -5.50704224 | ||
| 5 | 34942 | 2456 | - | 2528 | = | -72 | * | (53 | / | 213) | = | -17.91549295 | ||
| 6 | 34944 | 2521 | - | 2552 | = | -31 | * | (59 | / | 213) | = | -8.58685446 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Westmont Elementary | -35 | ||||||||||||
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 | 35113 | 2410 | - | 2436 | = | -26 | * | (52 | / | 198) | = | -6.82828281 | ||
| 4 | 35114 | 2462 | - | 2485 | = | -23 | * | (48 | / | 198) | = | -5.57575757 | ||
| 5 | 35115 | 2495 | - | 2528 | = | -33 | * | (42 | / | 198) | = | -7.0 | ||
| 6 | 35116 | 2499 | - | 2552 | = | -53 | * | (56 | / | 198) | = | -14.98989895 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Westmont Elementary | -34 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -42 | -35 | -33 | -35 | -34 | -179.0 | -35.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -26.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -44.8
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 | 92% | 90% | 91% | 91% | 93% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Pomona Unified 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.
Westmont Elementary math proficiency
Zero+ meets standard.
80% less $meal
78% less $meal
79% less $meal
80% less $meal
80% 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.