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	2135826	2406	-	2436	=	-30	*	(109	/	364)	=	-8.98351647
4	2135827	2451	-	2485	=	-34	*	(88	/	364)	=	-8.21978019
5	2135830	2498	-	2528	=	-30	*	(90	/	364)	=	-7.41758241
6	2135831	2526	-	2552	=	-26	*	(77	/	364)	=	-5.49999999
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Rosebank Elementary											-30

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	65572	2412	-	2436	=	-24	*	(82	/	372)	=	-5.29032257
4	65574	2478	-	2485	=	-7	*	(109	/	372)	=	-2.05107526
5	65576	2508	-	2528	=	-20	*	(86	/	372)	=	-4.6236559
6	65579	2509	-	2552	=	-43	*	(95	/	372)	=	-10.98118279
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Rosebank Elementary											-23

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	67391	2417	-	2436	=	-19	*	(69	/	344)	=	-3.81104651
4	67393	2465	-	2485	=	-20	*	(78	/	344)	=	-4.53488372
5	67395	2493	-	2528	=	-35	*	(112	/	344)	=	-11.39534883
6	67397	2523	-	2552	=	-29	*	(85	/	344)	=	-7.16569767
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Rosebank Elementary											-27

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	67497	2410	-	2436	=	-26	*	(84	/	346)	=	-6.31213872
4	67498	2481	-	2485	=	-4	*	(69	/	346)	=	-0.79768786
5	67501	2471	-	2528	=	-57	*	(86	/	346)	=	-14.16763004
6	67502	2517	-	2552	=	-35	*	(107	/	346)	=	-10.82369939
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Rosebank Elementary											-32

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	68012	2435	-	2436	=	-1	*	(86	/	329)	=	-0.26139818
4	68013	2476	-	2485	=	-9	*	(81	/	329)	=	-2.21580546
5	68014	2498	-	2528	=	-30	*	(75	/	329)	=	-6.83890575
6	68015	2496	-	2552	=	-56	*	(87	/	329)	=	-14.80851058
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Rosebank Elementary											-24

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-30	-23	-27	-32	-24	-136.0	-27.2

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: -18.2

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -36.2

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	75%	73%	74%	77%	82%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file