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 |
978489 |
2340 |
- |
2436 |
= |
-96 |
* |
(156 |
/ |
433)
|
= |
-34.58660506 |
| 4 |
978490 |
2375 |
- |
2485 |
= |
-110 |
* |
(134 |
/ |
433)
|
= |
-34.04157042 |
| 5 |
978492 |
2392 |
- |
2528 |
= |
-136 |
* |
(143 |
/ |
433)
|
= |
-44.91454958 |
| Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Woodcrest Elementary
|
-114 |
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 |
30964 |
2374 |
- |
2436 |
= |
-62 |
* |
(134 |
/ |
405)
|
= |
-20.51358021 |
| 4 |
30966 |
2408 |
- |
2485 |
= |
-77 |
* |
(144 |
/ |
405)
|
= |
-27.37777774 |
| 5 |
30968 |
2418 |
- |
2528 |
= |
-110 |
* |
(127 |
/ |
405)
|
= |
-34.49382706 |
| Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Woodcrest Elementary
|
-82 |
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 |
31528 |
2409 |
- |
2436 |
= |
-27 |
* |
(118 |
/ |
383)
|
= |
-8.31853784 |
| 4 |
31530 |
2403 |
- |
2485 |
= |
-82 |
* |
(132 |
/ |
383)
|
= |
-28.26109656 |
| 5 |
31531 |
2432 |
- |
2528 |
= |
-96 |
* |
(133 |
/ |
383)
|
= |
-33.33681456 |
| Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Woodcrest Elementary
|
-70 |
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 |
31575 |
2392 |
- |
2436 |
= |
-44 |
* |
(122 |
/ |
369)
|
= |
-14.54742546 |
| 4 |
31577 |
2430 |
- |
2485 |
= |
-55 |
* |
(111 |
/ |
369)
|
= |
-16.54471544 |
| 5 |
31579 |
2443 |
- |
2528 |
= |
-85 |
* |
(136 |
/ |
369)
|
= |
-31.32791323 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Woodcrest Elementary
|
-62 |
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 |
31752 |
2408 |
- |
2436 |
= |
-28 |
* |
(121 |
/ |
348)
|
= |
-9.73563217 |
| 4 |
31753 |
2431 |
- |
2485 |
= |
-54 |
* |
(117 |
/ |
348)
|
= |
-18.15517238 |
| 5 |
31754 |
2461 |
- |
2528 |
= |
-67 |
* |
(110 |
/ |
348)
|
= |
-21.17816092 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Woodcrest Elementary
|
-49 |
Last steps
Compute the average
| 2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
|
-114
|
-82
|
-70
|
-62
|
-49
|
-377.0 |
-75.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -3.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -147.4
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:
