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	1536089	2394	-	2436	=	-42	*	(100	/	291)	=	-14.43298966
4	1536090	2411	-	2485	=	-74	*	(97	/	291)	=	-24.66666664
5	1536093	2460	-	2528	=	-68	*	(94	/	291)	=	-21.96563567
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Diamond Elementary											-61

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	48112	2398	-	2436	=	-38	*	(85	/	272)	=	-11.875
4	48115	2439	-	2485	=	-46	*	(91	/	272)	=	-15.38970586
5	48116	2441	-	2528	=	-87	*	(96	/	272)	=	-30.70588231
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Diamond Elementary											-58

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	49441	2413	-	2436	=	-23	*	(91	/	268)	=	-7.80970147
4	49443	2449	-	2485	=	-36	*	(85	/	268)	=	-11.41791044
5	49445	2456	-	2528	=	-72	*	(92	/	268)	=	-24.7164179
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Diamond Elementary											-44

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	49454	2394	-	2436	=	-42	*	(85	/	256)	=	-13.9453125
4	49456	2460	-	2485	=	-25	*	(91	/	256)	=	-8.88671875
5	49459	2475	-	2528	=	-53	*	(80	/	256)	=	-16.5625
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Diamond Elementary											-39

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	49653	2405	-	2436	=	-31	*	(87	/	254)	=	-10.61811024
4	49654	2467	-	2485	=	-18	*	(84	/	254)	=	-5.9527559
5	49655	2500	-	2528	=	-28	*	(83	/	254)	=	-9.14960628
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Diamond Elementary											-26

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-61	-58	-44	-39	-26	-228.0	-45.6

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: -3.6

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -87.6

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	91%	94%	92%	89%	88%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file