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
6	95	2443	-	2552	=	-109	*	(59	/	83)	=	-77.48192766
7	98	2485	-	2567	=	-82	*	(24	/	83)	=	-23.71084333
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Oakland Unity Middle											-101

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
6	100	2421	-	2552	=	-131	*	(63	/	148)	=	-55.76351343
7	101	2465	-	2567	=	-102	*	(59	/	148)	=	-40.6621621
8	103	2480	-	2586	=	-106	*	(26	/	148)	=	-18.62162155
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Oakland Unity Middle											-115

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
6	99	2446	-	2552	=	-106	*	(49	/	171)	=	-30.37426894
7	101	2466	-	2567	=	-101	*	(62	/	171)	=	-36.619883
8	103	2507	-	2586	=	-79	*	(60	/	171)	=	-27.71929817
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Oakland Unity Middle											-95

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
6	107	2456	-	2552	=	-96	*	(61	/	171)	=	-34.24561402
7	108	2450	-	2567	=	-117	*	(53	/	171)	=	-36.26315784
8	109	2494	-	2586	=	-92	*	(57	/	171)	=	-30.66666664
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Oakland Unity Middle											-101

Last steps

Compute the average

2016	2017	2018	2019	Sum	Average
-101	-115	-95	-101	-412.0	-103.0

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:

	2016	2017	2018	2019
Percent	90%	95%	86%	77%
Data source	2016 data file	2017 data file	2018 data file	2019 data file