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	332809	2388	-	2436	=	-48	*	(92	/	329)	=	-13.42249238
4	332810	2426	-	2485	=	-59	*	(77	/	329)	=	-13.80851063
5	332813	2454	-	2528	=	-74	*	(86	/	329)	=	-19.34346502
6	332814	2481	-	2552	=	-71	*	(74	/	329)	=	-15.96960485
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Viking Elementary											-63

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	9930	2394	-	2436	=	-42	*	(106	/	367)	=	-12.13079015
4	9932	2449	-	2485	=	-36	*	(89	/	367)	=	-8.7302452
5	9934	2439	-	2528	=	-89	*	(84	/	367)	=	-20.37057214
6	9936	2491	-	2552	=	-61	*	(88	/	367)	=	-14.62670298
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Viking Elementary											-56

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	10257	2415	-	2436	=	-21	*	(93	/	364)	=	-5.36538461
4	10260	2451	-	2485	=	-34	*	(101	/	364)	=	-9.43406592
5	10262	2454	-	2528	=	-74	*	(84	/	364)	=	-17.07692302
6	10263	2472	-	2552	=	-80	*	(86	/	364)	=	-18.90109888
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Viking Elementary											-51

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	10276	2413	-	2436	=	-23	*	(102	/	383)	=	-6.12532635
4	10277	2468	-	2485	=	-17	*	(91	/	383)	=	-4.03916449
5	10280	2458	-	2528	=	-70	*	(105	/	383)	=	-19.19060052
6	10281	2492	-	2552	=	-60	*	(85	/	383)	=	-13.31592684
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Viking Elementary											-43

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	10356	2431	-	2436	=	-5	*	(88	/	388)	=	-1.13402062
4	10357	2467	-	2485	=	-18	*	(112	/	388)	=	-5.19587627
5	10358	2469	-	2528	=	-59	*	(88	/	388)	=	-13.38144326
6	10359	2497	-	2552	=	-55	*	(100	/	388)	=	-14.17525769
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Viking Elementary											-34

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-63	-56	-51	-43	-34	-247.0	-49.4

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: -16.4

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -82.4

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:

	2015	2016	2017	2018	2019
Percent	94%	94%	94%	93%	92%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file