Northam Elementary (Data source)
Source data for Northam 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 | 1184963 | 2383 | - | 2436 | = | -53 | * | (76 | / | 266) | = | -15.14285711 | ||
| 4 | 1184966 | 2399 | - | 2485 | = | -86 | * | (69 | / | 266) | = | -22.30827066 | ||
| 5 | 1184967 | 2440 | - | 2528 | = | -88 | * | (58 | / | 266) | = | -19.18796986 | ||
| 6 | 1184970 | 2492 | - | 2552 | = | -60 | * | (63 | / | 266) | = | -14.2105263 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2015 Difference From Standard for Northam Elementary | -71 | ||||||||||||
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 | 36882 | 2409 | - | 2436 | = | -27 | * | (62 | / | 263) | = | -6.36501899 | ||
| 4 | 36884 | 2443 | - | 2485 | = | -42 | * | (70 | / | 263) | = | -11.17870719 | ||
| 5 | 36886 | 2447 | - | 2528 | = | -81 | * | (65 | / | 263) | = | -20.01901133 | ||
| 6 | 36888 | 2501 | - | 2552 | = | -51 | * | (66 | / | 263) | = | -12.79847907 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2016 Difference From Standard for Northam Elementary | -50 | ||||||||||||
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 | 37660 | 2394 | - | 2436 | = | -42 | * | (75 | / | 265) | = | -11.88679241 | ||
| 4 | 37662 | 2437 | - | 2485 | = | -48 | * | (59 | / | 265) | = | -10.68679243 | ||
| 5 | 37663 | 2470 | - | 2528 | = | -58 | * | (68 | / | 265) | = | -14.88301883 | ||
| 6 | 37665 | 2489 | - | 2552 | = | -63 | * | (63 | / | 265) | = | -14.97735849 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2017 Difference From Standard for Northam Elementary | -52 | ||||||||||||
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 | 37604 | 2391 | - | 2436 | = | -45 | * | (61 | / | 263) | = | -10.43726234 | ||
| 4 | 37606 | 2427 | - | 2485 | = | -58 | * | (72 | / | 263) | = | -15.87832696 | ||
| 5 | 37608 | 2462 | - | 2528 | = | -66 | * | (62 | / | 263) | = | -15.5589353 | ||
| 6 | 37610 | 2508 | - | 2552 | = | -44 | * | (68 | / | 263) | = | -11.37642585 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2018 Difference From Standard for Northam Elementary | -53 | ||||||||||||
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 | 37815 | 2395 | - | 2436 | = | -41 | * | (66 | / | 257) | = | -10.52918286 | ||
| 4 | 37816 | 2434 | - | 2485 | = | -51 | * | (59 | / | 257) | = | -11.70817118 | ||
| 5 | 37817 | 2444 | - | 2528 | = | -84 | * | (74 | / | 257) | = | -24.18677041 | ||
| 6 | 37818 | 2521 | - | 2552 | = | -31 | * | (58 | / | 257) | = | -6.99610892 | ||
| Step 4 | SUM Weighted Distance From Standard to get 2019 Difference From Standard for Northam Elementary | -53 | ||||||||||||
Last steps
Compute the average
| 2015 | 2016 | 2017 | 2018 | 2019 | Sum | Average |
|---|---|---|---|---|---|---|
| -71 | -50 | -52 | -53 | -53 | -279.0 | -55.8 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -31.8
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -79.8
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 | 88% | 88% | 92% | 94% | 94% |
| Data source | 2015 data file | 2016 data file | 2017 data file | 2018 data file | 2019 data file |
Rowland Unified school district | County of Los Angeles
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.
Northam Elementary math proficiency
Zero+ meets standard.
77% less $meal
80% less $meal
82% less $meal
83% less $meal
85% 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.