Ocotillo Elementary (Data source)
Source data for Ocotillo 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 | 1058969 | 2397 | - | 2436 | = | -39 | * | (141 | / | 562) | = | -9.78469748 | ||
| 4 | 1058972 | 2440 | - | 2485 | = | -45 | * | (154 | / | 562) | = | -12.33096084 | ||
| 5 | 1058973 | 2458 | - | 2528 | = | -70 | * | (128 | / | 562) | = | -15.94306049 | ||
| 6 | 1058976 | 2520 | - | 2552 | = | -32 | * | (139 | / | 562) | = | -7.91459072 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Ocotillo Elementary | -46 | ||||||||||||
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 | 33238 | 2393 | - | 2436 | = | -43 | * | (156 | / | 574) | = | -11.68641113 | ||
| 4 | 33239 | 2441 | - | 2485 | = | -44 | * | (139 | / | 574) | = | -10.65505223 | ||
| 5 | 33242 | 2473 | - | 2528 | = | -55 | * | (154 | / | 574) | = | -14.75609751 | ||
| 6 | 33244 | 2527 | - | 2552 | = | -25 | * | (125 | / | 574) | = | -5.44425085 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Ocotillo Elementary | -43 | ||||||||||||
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 | 33823 | 2388 | - | 2436 | = | -48 | * | (145 | / | 553) | = | -12.5858951 | ||
| 4 | 33825 | 2440 | - | 2485 | = | -45 | * | (134 | / | 553) | = | -10.90415912 | ||
| 5 | 33826 | 2482 | - | 2528 | = | -46 | * | (138 | / | 553) | = | -11.47920432 | ||
| 6 | 33829 | 2530 | - | 2552 | = | -22 | * | (136 | / | 553) | = | -5.41048823 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Ocotillo Elementary | -40 | ||||||||||||
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 | 33854 | 2407 | - | 2436 | = | -29 | * | (118 | / | 381) | = | -8.98162729 | ||
| 4 | 33857 | 2449 | - | 2485 | = | -36 | * | (121 | / | 381) | = | -11.43307084 | ||
| 5 | 33858 | 2458 | - | 2528 | = | -70 | * | (142 | / | 381) | = | -26.08923884 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Ocotillo Elementary | -47 | ||||||||||||
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 | 34036 | 2423 | - | 2436 | = | -13 | * | (125 | / | 364) | = | -4.46428571 | ||
| 4 | 34037 | 2465 | - | 2485 | = | -20 | * | (119 | / | 364) | = | -6.53846152 | ||
| 5 | 34038 | 2476 | - | 2528 | = | -52 | * | (120 | / | 364) | = | -17.14285711 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Ocotillo Elementary | -28 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -46 | -43 | -40 | -47 | -28 | -204.0 | -40.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -19.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -61.8
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 | 69% | 74% | 72% | 74% | 74% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Palmdale 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.
Ocotillo Elementary math proficiency
Zero+ meets standard.
58% less $meal
63% less $meal
58% less $meal
66% less $meal
65% 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.