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	326663	2382	-	2436	=	-54	*	(51	/	231)	=	-11.92207788
4	326666	2387	-	2485	=	-98	*	(62	/	231)	=	-26.30303026
5	326667	2432	-	2528	=	-96	*	(62	/	231)	=	-25.76623373
6	326670	2446	-	2552	=	-106	*	(56	/	231)	=	-25.69696965
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Jackson Elementary											-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
3	9744	2395	-	2436	=	-41	*	(57	/	232)	=	-10.07327586
4	9746	2434	-	2485	=	-51	*	(57	/	232)	=	-12.53017241
5	9748	2430	-	2528	=	-98	*	(53	/	232)	=	-22.38793095
6	9749	2480	-	2552	=	-72	*	(65	/	232)	=	-20.17241374
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Jackson Elementary											-65

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	10072	2400	-	2436	=	-36	*	(57	/	219)	=	-9.36986299
4	10073	2466	-	2485	=	-19	*	(55	/	219)	=	-4.77168949
5	10075	2446	-	2528	=	-82	*	(54	/	219)	=	-20.21917804
6	10078	2480	-	2552	=	-72	*	(53	/	219)	=	-17.4246575
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Jackson Elementary											-52

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	10090	2418	-	2436	=	-18	*	(50	/	222)	=	-4.05405405
4	10092	2443	-	2485	=	-42	*	(61	/	222)	=	-11.54054051
5	10094	2475	-	2528	=	-53	*	(56	/	222)	=	-13.36936936
6	10096	2484	-	2552	=	-68	*	(55	/	222)	=	-16.8468468
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Jackson Elementary											-46

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	10170	2408	-	2436	=	-28	*	(65	/	242)	=	-7.52066115
4	10171	2464	-	2485	=	-21	*	(54	/	242)	=	-4.6859504
5	10172	2436	-	2528	=	-92	*	(65	/	242)	=	-24.71074377
6	10173	2518	-	2552	=	-34	*	(58	/	242)	=	-8.14876031
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Jackson Elementary											-45

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-90	-65	-52	-46	-45	-298.0	-59.6

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: -5.6

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -113.6

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	96%	94%	93%	96%	94%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file