Portola Springs Elementary (Data source)
Source data for Portola Springs 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 | 1574530 | 2509 | - | 2436 | = | 73 | * | (27 | / | 59) | = | 33.40677961 | ||
| 4 | 1574533 | 2541 | - | 2485 | = | 56 | * | (20 | / | 59) | = | 18.9830508 | ||
| 5 | 1574534 | 2578 | - | 2528 | = | 50 | * | (12 | / | 59) | = | 10.1694915 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Portola Springs Elementary | 63 | ||||||||||||
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 | 49265 | 2521 | - | 2436 | = | 85 | * | (101 | / | 276) | = | 31.10507238 | ||
| 4 | 49266 | 2554 | - | 2485 | = | 69 | * | (89 | / | 276) | = | 22.24999999 | ||
| 5 | 49268 | 2566 | - | 2528 | = | 38 | * | (62 | / | 276) | = | 8.53623188 | ||
| 6 | 49270 | 2609 | - | 2552 | = | 57 | * | (24 | / | 276) | = | 4.9565217 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Portola Springs Elementary | 67 | ||||||||||||
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 | 50605 | 2515 | - | 2436 | = | 79 | * | (117 | / | 391) | = | 23.63938614 | ||
| 4 | 50606 | 2543 | - | 2485 | = | 58 | * | (102 | / | 391) | = | 15.13043477 | ||
| 5 | 50608 | 2591 | - | 2528 | = | 63 | * | (105 | / | 391) | = | 16.91815854 | ||
| 6 | 50610 | 2628 | - | 2552 | = | 76 | * | (67 | / | 391) | = | 13.02301785 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Portola Springs Elementary | 69 | ||||||||||||
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 | 50626 | 2492 | - | 2436 | = | 56 | * | (126 | / | 468) | = | 15.07692306 | ||
| 4 | 50629 | 2541 | - | 2485 | = | 56 | * | (115 | / | 468) | = | 13.76068372 | ||
| 5 | 50630 | 2570 | - | 2528 | = | 42 | * | (111 | / | 468) | = | 9.96153845 | ||
| 6 | 50632 | 2634 | - | 2552 | = | 82 | * | (116 | / | 468) | = | 20.32478625 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Portola Springs Elementary | 59 | ||||||||||||
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 | 50828 | 2492 | - | 2436 | = | 56 | * | (157 | / | 538) | = | 16.34200742 | ||
| 4 | 50829 | 2545 | - | 2485 | = | 60 | * | (134 | / | 538) | = | 14.94423786 | ||
| 5 | 50830 | 2584 | - | 2528 | = | 56 | * | (122 | / | 538) | = | 12.69888474 | ||
| 6 | 50831 | 2610 | - | 2552 | = | 58 | * | (125 | / | 538) | = | 13.47583641 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Portola Springs Elementary | 57 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| 63 | 67 | 69 | 59 | 57 | 315.0 | 63.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 78.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: 48.0
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 | 11% | 5% | 6% | 12% | 13% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Irvine Unified school district | County of Orange
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.
Portola Springs Elementary math proficiency
Zero+ meets standard.
7% less $meal
3% less $meal
4% less $meal
11% less $meal
11% 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.