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	2134668	2443	-	2436	=	7	*	(45	/	206)	=	1.52912621
4	2134669	2455	-	2485	=	-30	*	(47	/	206)	=	-6.84466017
5	2134672	2501	-	2528	=	-27	*	(61	/	206)	=	-7.99514561
6	2134673	2511	-	2552	=	-41	*	(53	/	206)	=	-10.54854367
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Finney (Myrtle S.) Elementary											-24

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	65538	2432	-	2436	=	-4	*	(72	/	228)	=	-1.26315789
4	65541	2500	-	2485	=	15	*	(51	/	228)	=	3.35526315
5	65543	2501	-	2528	=	-27	*	(46	/	228)	=	-5.4473684
6	65545	2521	-	2552	=	-31	*	(59	/	228)	=	-8.0219298
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Finney (Myrtle S.) Elementary											-11

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	67355	2466	-	2436	=	30	*	(38	/	199)	=	5.72864319
4	67357	2446	-	2485	=	-39	*	(67	/	199)	=	-13.13065326
5	67359	2510	-	2528	=	-18	*	(47	/	199)	=	-4.25125627
6	67360	2537	-	2552	=	-15	*	(47	/	199)	=	-3.54271356
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Finney (Myrtle S.) Elementary											-15

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	67461	2440	-	2436	=	4	*	(47	/	211)	=	0.89099526
4	67463	2440	-	2485	=	-45	*	(42	/	211)	=	-8.95734594
5	67465	2471	-	2528	=	-57	*	(70	/	211)	=	-18.90995258
6	67467	2529	-	2552	=	-23	*	(52	/	211)	=	-5.66824643
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Finney (Myrtle S.) Elementary											-33

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	67976	2424	-	2436	=	-12	*	(47	/	203)	=	-2.77832512
4	67977	2457	-	2485	=	-28	*	(46	/	203)	=	-6.34482758
5	67978	2482	-	2528	=	-46	*	(44	/	203)	=	-9.97044333
6	67979	2523	-	2552	=	-29	*	(66	/	203)	=	-9.42857141
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Finney (Myrtle S.) Elementary											-29

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-24	-11	-15	-33	-29	-112.0	-22.4

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: 4.6

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -49.4

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	69%	70%	68%	76%	70%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file