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	327581	2398	-	2436	=	-38	*	(69	/	284)	=	-9.23239435
4	327582	2414	-	2485	=	-71	*	(82	/	284)	=	-20.49999997
5	327585	2455	-	2528	=	-73	*	(71	/	284)	=	-18.25
6	327586	2477	-	2552	=	-75	*	(62	/	284)	=	-16.37323943
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Kratt Elementary											-64

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	9773	2417	-	2436	=	-19	*	(74	/	292)	=	-4.81506848
4	9776	2445	-	2485	=	-40	*	(71	/	292)	=	-9.72602736
5	9777	2456	-	2528	=	-72	*	(83	/	292)	=	-20.4657534
6	9780	2514	-	2552	=	-38	*	(64	/	292)	=	-8.32876712
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Kratt Elementary											-43

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	10102	2435	-	2436	=	-1	*	(67	/	285)	=	-0.23508772
4	10103	2422	-	2485	=	-63	*	(68	/	285)	=	-15.03157893
5	10105	2474	-	2528	=	-54	*	(71	/	285)	=	-13.45263158
6	10107	2469	-	2552	=	-83	*	(79	/	285)	=	-23.00701751
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Kratt 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	10120	2437	-	2436	=	1	*	(66	/	278)	=	0.23741007
4	10121	2466	-	2485	=	-19	*	(72	/	278)	=	-4.9208633
5	10124	2459	-	2528	=	-69	*	(69	/	278)	=	-17.12589922
6	10125	2495	-	2552	=	-57	*	(71	/	278)	=	-14.55755393
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Kratt Elementary											-36

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	10200	2433	-	2436	=	-3	*	(76	/	263)	=	-0.86692015
4	10201	2483	-	2485	=	-2	*	(58	/	263)	=	-0.44106464
5	10202	2501	-	2528	=	-27	*	(63	/	263)	=	-6.4676806
6	10203	2487	-	2552	=	-65	*	(66	/	263)	=	-16.31178705
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Kratt Elementary											-24

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-64	-43	-52	-36	-24	-219.0	-43.8

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: 1.2

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -88.8

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	81%	79%	83%	83%	81%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file