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 
4 
82369 
0 
 
2485 
= 

* 
(0 
/ 
108) 
= 

5 
82370 
0 
 
2528 
= 

* 
(0 
/ 
108) 
= 

6 
82371 
0 
 
2552 
= 

* 
(9 
/ 
108) 
= 

7 
82372 
0 
 
2567 
= 

* 
(10 
/ 
108) 
= 

8 
82373 
2442 
 
2586 
= 
144 
* 
(23 
/ 
108) 
= 
30.66666653 
11 
82374 
2466 
 
2628 
= 
162 
* 
(64 
/ 
108) 
= 
95.9999999 
Step 4 
SUM Weighted Distance From Standard to get
2019 Difference From Standard for SBE  Olive Grove Charter  Orcutt/Santa Maria

127 
Last steps
Compute the average
2019 
Sum 
Average 
127

127.0 
127.0 
Compute the Upper Control Limit
Simply compute the standard deviation and multiply by 3 and add to the average:
Compute the Lower Control Limit
Simply compute the standard deviation and multiply by 3 and subtract from the average:
For the lines, you have the data necessary to plot the chart.