Lopez Elementary (Data source)
Source data for Lopez 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 | 1088602 | 2369 | - | 2436 | = | -67 | * | (97 | / | 349) | = | -18.62177645 | ||
| 4 | 1088603 | 2410 | - | 2485 | = | -75 | * | (74 | / | 349) | = | -15.90257873 | ||
| 5 | 1088606 | 2434 | - | 2528 | = | -94 | * | (92 | / | 349) | = | -24.77936961 | ||
| 6 | 1088607 | 2433 | - | 2552 | = | -119 | * | (86 | / | 349) | = | -29.32378222 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Lopez Elementary | -89 | ||||||||||||
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 | 34070 | 2371 | - | 2436 | = | -65 | * | (101 | / | 360) | = | -18.23611108 | ||
| 4 | 34072 | 2395 | - | 2485 | = | -90 | * | (94 | / | 360) | = | -23.49999999 | ||
| 5 | 34073 | 2431 | - | 2528 | = | -97 | * | (72 | / | 360) | = | -19.4 | ||
| 6 | 34075 | 2438 | - | 2552 | = | -114 | * | (93 | / | 360) | = | -29.44999996 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Lopez Elementary | -91 | ||||||||||||
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 | 34666 | 2397 | - | 2436 | = | -39 | * | (77 | / | 325) | = | -9.23999996 | ||
| 4 | 34668 | 2410 | - | 2485 | = | -75 | * | (95 | / | 325) | = | -21.9230769 | ||
| 5 | 34670 | 2431 | - | 2528 | = | -97 | * | (90 | / | 325) | = | -26.86153837 | ||
| 6 | 34671 | 2422 | - | 2552 | = | -130 | * | (63 | / | 325) | = | -25.19999989 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Lopez Elementary | -83 | ||||||||||||
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 | 34669 | 2413 | - | 2436 | = | -23 | * | (79 | / | 319) | = | -5.69592475 | ||
| 4 | 34670 | 2432 | - | 2485 | = | -53 | * | (67 | / | 319) | = | -11.13166139 | ||
| 5 | 34673 | 2457 | - | 2528 | = | -71 | * | (88 | / | 319) | = | -19.58620683 | ||
| 6 | 34674 | 2432 | - | 2552 | = | -120 | * | (85 | / | 319) | = | -31.9749216 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Lopez Elementary | -68 | ||||||||||||
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 | 34841 | 2397 | - | 2436 | = | -39 | * | (78 | / | 309) | = | -9.84466018 | ||
| 4 | 34842 | 2460 | - | 2485 | = | -25 | * | (87 | / | 309) | = | -7.03883495 | ||
| 5 | 34843 | 2456 | - | 2528 | = | -72 | * | (62 | / | 309) | = | -14.44660193 | ||
| 6 | 34844 | 2444 | - | 2552 | = | -108 | * | (82 | / | 309) | = | -28.66019414 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Lopez Elementary | -60 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -89 | -91 | -83 | -68 | -60 | -391.0 | -78.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -39.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -117.2
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 | 97% | 97% | 97% | 96% | 99% |
| 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.
Lopez Elementary math proficiency
Zero+ meets standard.
90% less $meal
89% less $meal
87% less $meal
92% less $meal
94% 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.