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 |
911229 |
2374 |
- |
2436 |
= |
-62 |
* |
(99 |
/ |
293)
|
= |
-20.94880546 |
| 4 |
911230 |
2425 |
- |
2485 |
= |
-60 |
* |
(101 |
/ |
293)
|
= |
-20.68259382 |
| 5 |
911233 |
2436 |
- |
2528 |
= |
-92 |
* |
(93 |
/ |
293)
|
= |
-29.20136516 |
| Step 4 |
SUM Weighted Distance From Standard to get
2015 Difference From Standard for Gridley Street 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 |
28801 |
2392 |
- |
2436 |
= |
-44 |
* |
(101 |
/ |
294)
|
= |
-15.11564622 |
| 4 |
28802 |
2415 |
- |
2485 |
= |
-70 |
* |
(96 |
/ |
294)
|
= |
-22.85714284 |
| 5 |
28805 |
2453 |
- |
2528 |
= |
-75 |
* |
(97 |
/ |
294)
|
= |
-24.7448979 |
| Step 4 |
SUM Weighted Distance From Standard to get
2016 Difference From Standard for Gridley Street Elementary
|
-63 |
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 |
29366 |
2398 |
- |
2436 |
= |
-38 |
* |
(85 |
/ |
260)
|
= |
-12.42307689 |
| 4 |
29367 |
2443 |
- |
2485 |
= |
-42 |
* |
(90 |
/ |
260)
|
= |
-14.53846153 |
| 5 |
29369 |
2464 |
- |
2528 |
= |
-64 |
* |
(85 |
/ |
260)
|
= |
-20.92307686 |
| Step 4 |
SUM Weighted Distance From Standard to get
2017 Difference From Standard for Gridley Street Elementary
|
-48 |
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 |
29414 |
2387 |
- |
2436 |
= |
-49 |
* |
(71 |
/ |
229)
|
= |
-15.19213973 |
| 4 |
29416 |
2426 |
- |
2485 |
= |
-59 |
* |
(74 |
/ |
229)
|
= |
-19.06550214 |
| 5 |
29418 |
2430 |
- |
2528 |
= |
-98 |
* |
(84 |
/ |
229)
|
= |
-35.94759825 |
| Step 4 |
SUM Weighted Distance From Standard to get
2018 Difference From Standard for Gridley Street Elementary
|
-70 |
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 |
29590 |
2387 |
- |
2436 |
= |
-49 |
* |
(87 |
/ |
225)
|
= |
-18.94666663 |
| 4 |
29591 |
2437 |
- |
2485 |
= |
-48 |
* |
(69 |
/ |
225)
|
= |
-14.71999997 |
| 5 |
29592 |
2441 |
- |
2528 |
= |
-87 |
* |
(69 |
/ |
225)
|
= |
-26.67999994 |
| Step 4 |
SUM Weighted Distance From Standard to get
2019 Difference From Standard for Gridley Street Elementary
|
-60 |
Last steps
Compute the average
| 2015 |
2016 |
2017 |
2018 |
2019 |
Sum |
Average |
|
-71
|
-63
|
-48
|
-70
|
-60
|
-312.0 |
-62.4 |
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average: -35.4
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average: -89.4
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:
