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	337727	2419	-	2436	=	-17	*	(64	/	245)	=	-4.44081631
4	337729	2449	-	2485	=	-36	*	(64	/	245)	=	-9.4040816
5	337731	2443	-	2528	=	-85	*	(67	/	245)	=	-23.2448979
6	337732	2525	-	2552	=	-27	*	(50	/	245)	=	-5.51020406
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for McCardle Elementary											-43

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	10065	2433	-	2436	=	-3	*	(73	/	261)	=	-0.83908046
4	10068	2462	-	2485	=	-23	*	(65	/	261)	=	-5.72796934
5	10070	2470	-	2528	=	-58	*	(58	/	261)	=	-12.88888888
6	10071	2479	-	2552	=	-73	*	(65	/	261)	=	-18.18007659
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for McCardle Elementary											-38

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	10393	2433	-	2436	=	-3	*	(67	/	255)	=	-0.78823529
4	10395	2480	-	2485	=	-5	*	(68	/	255)	=	-1.33333333
5	10397	2498	-	2528	=	-30	*	(58	/	255)	=	-6.8235294
6	10399	2508	-	2552	=	-44	*	(62	/	255)	=	-10.69803918
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for McCardle Elementary											-20

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	10405	2436	-	2436	=	0	*	(56	/	239)	=	0.0
4	10408	2462	-	2485	=	-23	*	(64	/	239)	=	-6.1589958
5	10409	2510	-	2528	=	-18	*	(56	/	239)	=	-4.21757321
6	10412	2533	-	2552	=	-19	*	(63	/	239)	=	-5.00836819
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for McCardle Elementary											-15

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	10486	2419	-	2436	=	-17	*	(67	/	240)	=	-4.74583332
4	10487	2472	-	2485	=	-13	*	(57	/	240)	=	-3.0875
5	10488	2497	-	2528	=	-31	*	(57	/	240)	=	-7.3625
6	10489	2549	-	2552	=	-3	*	(59	/	240)	=	-0.7375
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for McCardle Elementary											-16

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-43	-38	-20	-15	-16	-132.0	-26.4

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: 12.6

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -65.4

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	70%	76%	81%	82%	80%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file