Lyndale Elementary (Data source)
Source data for Lyndale 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 | 2618704 | 2386 | - | 2436 | = | -50 | * | (73 | / | 234) | = | -15.59829055 | ||
4 | 2618707 | 2437 | - | 2485 | = | -48 | * | (80 | / | 234) | = | -16.41025637 | ||
5 | 2618708 | 2431 | - | 2528 | = | -97 | * | (81 | / | 234) | = | -33.57692306 | ||
Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Lyndale Elementary | -66 |
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 | 79909 | 2403 | - | 2436 | = | -33 | * | (83 | / | 225) | = | -12.1733333 | ||
4 | 79912 | 2445 | - | 2485 | = | -40 | * | (72 | / | 225) | = | -12.8 | ||
5 | 79914 | 2459 | - | 2528 | = | -69 | * | (70 | / | 225) | = | -21.46666666 | ||
Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Lyndale Elementary | -46 |
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 | 82095 | 2416 | - | 2436 | = | -20 | * | (63 | / | 210) | = | -6.0 | ||
4 | 82097 | 2451 | - | 2485 | = | -34 | * | (77 | / | 210) | = | -12.46666664 | ||
5 | 82099 | 2458 | - | 2528 | = | -70 | * | (70 | / | 210) | = | -23.33333331 | ||
Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Lyndale 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 | 82293 | 2410 | - | 2436 | = | -26 | * | (54 | / | 194) | = | -7.23711339 | ||
4 | 82296 | 2469 | - | 2485 | = | -16 | * | (64 | / | 194) | = | -5.27835051 | ||
5 | 82297 | 2467 | - | 2528 | = | -61 | * | (76 | / | 194) | = | -23.8969072 | ||
Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Lyndale Elementary | -36 |
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 | 82908 | 2417 | - | 2436 | = | -19 | * | (47 | / | 160) | = | -5.58125 | ||
4 | 82909 | 2471 | - | 2485 | = | -14 | * | (54 | / | 160) | = | -4.725 | ||
5 | 82910 | 2470 | - | 2528 | = | -58 | * | (59 | / | 160) | = | -21.3875 | ||
Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Lyndale Elementary | -32 |
Last steps
Compute the average
2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
---|---|---|---|---|---|---|
-66 | -46 | -42 | -36 | -32 | -222.0 | -44.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -5.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -83.4
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 | 93% | 94% | 91% | 84% | 84% |
Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Alum Rock Union Elementary school district | County of Santa Clara
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.
Lyndale Elementary math proficiency
Zero+ meets standard.
76% less $meal
76% less $meal
72% less $meal
68% less $meal
68% 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.