La Presa Elementary (Data source)
Source data for La Presa 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 | 2183985 | 2373 | - | 2436 | = | -63 | * | (63 | / | 233) | = | -17.03433476 | ||
| 4 | 2183986 | 2430 | - | 2485 | = | -55 | * | (57 | / | 233) | = | -13.45493562 | ||
| 5 | 2183989 | 2487 | - | 2528 | = | -41 | * | (55 | / | 233) | = | -9.67811158 | ||
| 6 | 2183990 | 2487 | - | 2552 | = | -65 | * | (58 | / | 233) | = | -16.18025747 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for La Presa Elementary | -56 | ||||||||||||
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 | 67071 | 2403 | - | 2436 | = | -33 | * | (60 | / | 206) | = | -9.61165046 | ||
| 4 | 67073 | 2452 | - | 2485 | = | -33 | * | (53 | / | 206) | = | -8.49029125 | ||
| 5 | 67075 | 2459 | - | 2528 | = | -69 | * | (43 | / | 206) | = | -14.40291262 | ||
| 6 | 67078 | 2513 | - | 2552 | = | -39 | * | (50 | / | 206) | = | -9.46601939 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for La Presa Elementary | -42 | ||||||||||||
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 | 68893 | 2420 | - | 2436 | = | -16 | * | (74 | / | 236) | = | -5.01694915 | ||
| 4 | 68894 | 2455 | - | 2485 | = | -30 | * | (60 | / | 236) | = | -7.62711864 | ||
| 5 | 68897 | 2458 | - | 2528 | = | -70 | * | (58 | / | 236) | = | -17.20338977 | ||
| 6 | 68899 | 2489 | - | 2552 | = | -63 | * | (44 | / | 236) | = | -11.74576265 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for La Presa Elementary | -42 | ||||||||||||
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 | 69063 | 2412 | - | 2436 | = | -24 | * | (66 | / | 247) | = | -6.41295545 | ||
| 4 | 69065 | 2450 | - | 2485 | = | -35 | * | (69 | / | 247) | = | -9.77732791 | ||
| 5 | 69067 | 2471 | - | 2528 | = | -57 | * | (57 | / | 247) | = | -13.15384611 | ||
| 6 | 69069 | 2476 | - | 2552 | = | -76 | * | (55 | / | 247) | = | -16.92307686 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for La Presa Elementary | -46 | ||||||||||||
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 | 69602 | 2423 | - | 2436 | = | -13 | * | (62 | / | 254) | = | -3.17322834 | ||
| 4 | 69603 | 2447 | - | 2485 | = | -38 | * | (63 | / | 254) | = | -9.42519685 | ||
| 5 | 69604 | 2464 | - | 2528 | = | -64 | * | (73 | / | 254) | = | -18.39370074 | ||
| 6 | 69605 | 2489 | - | 2552 | = | -63 | * | (56 | / | 254) | = | -13.88976372 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for La Presa Elementary | -45 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -56 | -42 | -42 | -46 | -45 | -231.0 | -46.2 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -31.2
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -61.2
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 | 86% | 87% | 80% | 83% | 84% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
La Mesa-Spring Valley school district | County of San Diego
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.
La Presa Elementary math proficiency
Zero+ meets standard.
71% less $meal
73% less $meal
62% less $meal
71% less $meal
73% 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.