LEAD Elementary (Data source)
Source data for LEAD 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 | 2551000 | 2432 | - | 2436 | = | -4 | * | (72 | / | 235) | = | -1.22553191 | ||
| 4 | 2551001 | 2456 | - | 2485 | = | -29 | * | (79 | / | 235) | = | -9.74893615 | ||
| 5 | 2551004 | 2465 | - | 2528 | = | -63 | * | (84 | / | 235) | = | -22.5191489 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for LEAD Elementary | -33 | ||||||||||||
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 | 77754 | 2423 | - | 2436 | = | -13 | * | (87 | / | 228) | = | -4.96052631 | ||
| 4 | 77756 | 2472 | - | 2485 | = | -13 | * | (63 | / | 228) | = | -3.59210526 | ||
| 5 | 77757 | 2470 | - | 2528 | = | -58 | * | (78 | / | 228) | = | -19.84210525 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for LEAD Elementary | -28 | ||||||||||||
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 | 79906 | 2406 | - | 2436 | = | -30 | * | (83 | / | 235) | = | -10.59574467 | ||
| 4 | 79909 | 2442 | - | 2485 | = | -43 | * | (85 | / | 235) | = | -15.55319146 | ||
| 5 | 79911 | 2504 | - | 2528 | = | -24 | * | (67 | / | 235) | = | -6.84255317 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for LEAD Elementary | -33 | ||||||||||||
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 | 80063 | 2380 | - | 2436 | = | -56 | * | (72 | / | 235) | = | -17.15744677 | ||
| 4 | 80066 | 2432 | - | 2485 | = | -53 | * | (80 | / | 235) | = | -18.04255314 | ||
| 5 | 80067 | 2458 | - | 2528 | = | -70 | * | (83 | / | 235) | = | -24.72340423 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for LEAD Elementary | -60 | ||||||||||||
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 | 80557 | 2386 | - | 2436 | = | -50 | * | (70 | / | 219) | = | -15.98173515 | ||
| 4 | 80558 | 2433 | - | 2485 | = | -52 | * | (69 | / | 219) | = | -16.38356164 | ||
| 5 | 80559 | 2429 | - | 2528 | = | -99 | * | (80 | / | 219) | = | -36.1643835 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for LEAD Elementary | -69 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -33 | -28 | -33 | -60 | -69 | -223.0 | -44.6 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: 9.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -98.6
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 | 76% | 67% | 71% | 70% | 67% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
San Mateo-Foster City school district | County of San Mateo
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.
LEAD Elementary math proficiency
Zero+ meets standard.
68% less $meal
58% less $meal
66% less $meal
63% less $meal
60% 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.