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
7	2656390	2487	-	2567	=	-80	*	(257	/	568)	=	-36.19718304
8	2656391	2487	-	2586	=	-99	*	(311	/	568)	=	-54.20598589
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Bridges Academy											-90

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
7	80975	2480	-	2567	=	-87	*	(252	/	527)	=	-41.60151802
8	80976	2503	-	2586	=	-83	*	(275	/	527)	=	-43.31119537
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Bridges Academy											-85

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
7	83208	2498	-	2567	=	-69	*	(174	/	432)	=	-27.79166661
8	83211	2473	-	2586	=	-113	*	(258	/	432)	=	-67.48611109
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Bridges Academy											-95

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
7	83437	2494	-	2567	=	-73	*	(192	/	366)	=	-38.2950819
8	83438	2501	-	2586	=	-85	*	(174	/	366)	=	-40.40983606
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Bridges Academy											-79

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
7	84049	2467	-	2567	=	-100	*	(135	/	345)	=	-39.1304347
8	84050	2493	-	2586	=	-93	*	(210	/	345)	=	-56.60869564
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Bridges Academy											-96

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-90	-85	-95	-79	-96	-445.0	-89.0

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.

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%	80%	71%	68%	84%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file