Lowell Elementary (Data source)
Source data for Lowell 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 | 2709820 | 2379 | - | 2436 | = | -57 | * | (84 | / | 208) | = | -23.01923072 | ||
| 4 | 2709821 | 2408 | - | 2485 | = | -77 | * | (73 | / | 208) | = | -27.02403843 | ||
| 5 | 2709824 | 2421 | - | 2528 | = | -107 | * | (51 | / | 208) | = | -26.23557685 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Lowell Elementary | -76 | ||||||||||||
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 | 82508 | 2400 | - | 2436 | = | -36 | * | (50 | / | 196) | = | -9.18367344 | ||
| 4 | 82511 | 2421 | - | 2485 | = | -64 | * | (78 | / | 196) | = | -25.46938771 | ||
| 5 | 82513 | 2425 | - | 2528 | = | -103 | * | (68 | / | 196) | = | -35.73469383 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Lowell Elementary | -70 | ||||||||||||
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 | 84800 | 2373 | - | 2436 | = | -63 | * | (50 | / | 163) | = | -19.32515336 | ||
| 4 | 84803 | 2418 | - | 2485 | = | -67 | * | (43 | / | 163) | = | -17.67484656 | ||
| 5 | 84805 | 2427 | - | 2528 | = | -101 | * | (70 | / | 163) | = | -43.37423305 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Lowell Elementary | -80 | ||||||||||||
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 | 85016 | 2395 | - | 2436 | = | -41 | * | (60 | / | 159) | = | -15.47169809 | ||
| 4 | 85018 | 2415 | - | 2485 | = | -70 | * | (51 | / | 159) | = | -22.45283012 | ||
| 5 | 85020 | 2414 | - | 2528 | = | -114 | * | (48 | / | 159) | = | -34.41509429 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Lowell Elementary | -72 | ||||||||||||
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 | 85610 | 2353 | - | 2436 | = | -83 | * | (50 | / | 157) | = | -26.43312097 | ||
| 4 | 85611 | 2420 | - | 2485 | = | -65 | * | (58 | / | 157) | = | -24.01273882 | ||
| 5 | 85612 | 2444 | - | 2528 | = | -84 | * | (49 | / | 157) | = | -26.21656044 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Lowell Elementary | -77 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -76 | -70 | -80 | -72 | -77 | -375.0 | -75.0 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -63.0
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -87.0
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 | 81% | 84% | 82% | 84% | 78% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
San Jose Unified 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.
Lowell Elementary math proficiency
Zero+ meets standard.
72% less $meal
76% less $meal
71% less $meal
77% less $meal
71% 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.