Mar Vista Elementary (Data source)
Source data for Mar Vista 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 | 2750302 | 2424 | - | 2436 | = | -12 | * | (57 | / | 245) | = | -2.79183673 | ||
| 4 | 2750305 | 2474 | - | 2485 | = | -11 | * | (68 | / | 245) | = | -3.05306122 | ||
| 5 | 2750306 | 2538 | - | 2528 | = | 10 | * | (56 | / | 245) | = | 2.28571428 | ||
| 6 | 2750309 | 2549 | - | 2552 | = | -3 | * | (64 | / | 245) | = | -0.78367347 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Mar Vista Elementary | -4 | ||||||||||||
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 | 83654 | 2449 | - | 2436 | = | 13 | * | (69 | / | 247) | = | 3.63157894 | ||
| 4 | 83657 | 2445 | - | 2485 | = | -40 | * | (57 | / | 247) | = | -9.2307692 | ||
| 5 | 83659 | 2514 | - | 2528 | = | -14 | * | (70 | / | 247) | = | -3.96761133 | ||
| 6 | 83661 | 2579 | - | 2552 | = | 27 | * | (51 | / | 247) | = | 5.57489876 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Mar Vista Elementary | -4 | ||||||||||||
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 | 85971 | 2423 | - | 2436 | = | -13 | * | (68 | / | 264) | = | -3.34848484 | ||
| 4 | 85972 | 2502 | - | 2485 | = | 17 | * | (68 | / | 264) | = | 4.37878787 | ||
| 5 | 85975 | 2477 | - | 2528 | = | -51 | * | (55 | / | 264) | = | -10.62499998 | ||
| 6 | 85977 | 2535 | - | 2552 | = | -17 | * | (73 | / | 264) | = | -4.70075757 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Mar Vista Elementary | -14 | ||||||||||||
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 | 86201 | 2447 | - | 2436 | = | 11 | * | (55 | / | 234) | = | 2.58547009 | ||
| 4 | 86204 | 2443 | - | 2485 | = | -42 | * | (67 | / | 234) | = | -12.02564101 | ||
| 5 | 86205 | 2519 | - | 2528 | = | -9 | * | (61 | / | 234) | = | -2.34615384 | ||
| 6 | 86208 | 2496 | - | 2552 | = | -56 | * | (51 | / | 234) | = | -12.20512815 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Mar Vista Elementary | -24 | ||||||||||||
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 | 86799 | 2396 | - | 2436 | = | -40 | * | (57 | / | 229) | = | -9.95633184 | ||
| 4 | 86800 | 2498 | - | 2485 | = | 13 | * | (49 | / | 229) | = | 2.78165939 | ||
| 5 | 86801 | 2462 | - | 2528 | = | -66 | * | (62 | / | 229) | = | -17.86899563 | ||
| 6 | 86802 | 2556 | - | 2552 | = | 4 | * | (61 | / | 229) | = | 1.06550218 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Mar Vista Elementary | -24 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -4 | -4 | -14 | -24 | -24 | -70.0 | -14.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 16.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -44.0
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 | 26% | 26% | 29% | 31% | 33% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Pajaro Valley Unified school district | County of Santa Cruz
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.
Mar Vista Elementary math proficiency
Zero+ meets standard.
22% less $meal
22% less $meal
25% less $meal
26% less $meal
27% 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.