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	2129883	2413	-	2436	=	-23	*	(63	/	253)	=	-5.72727271
4	2129886	2457	-	2485	=	-28	*	(60	/	253)	=	-6.6403162
5	2129887	2453	-	2528	=	-75	*	(68	/	253)	=	-20.15810273
6	2129890	2473	-	2552	=	-79	*	(62	/	253)	=	-19.35968375
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Castle Park Elementary											-52

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	65395	2421	-	2436	=	-15	*	(52	/	247)	=	-3.15789473
4	65397	2479	-	2485	=	-6	*	(61	/	247)	=	-1.48178137
5	65398	2488	-	2528	=	-40	*	(67	/	247)	=	-10.8502024
6	65400	2488	-	2552	=	-64	*	(67	/	247)	=	-17.36032384
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Castle Park Elementary											-33

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	67210	2404	-	2436	=	-32	*	(58	/	230)	=	-8.06956522
4	67213	2477	-	2485	=	-8	*	(47	/	230)	=	-1.63478261
5	67215	2499	-	2528	=	-29	*	(58	/	230)	=	-7.31304348
6	67217	2486	-	2552	=	-66	*	(67	/	230)	=	-19.2260869
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Castle Park Elementary											-36

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	67316	2433	-	2436	=	-3	*	(50	/	215)	=	-0.69767442
4	67319	2431	-	2485	=	-54	*	(59	/	215)	=	-14.81860462
5	67320	2502	-	2528	=	-26	*	(49	/	215)	=	-5.92558138
6	67323	2528	-	2552	=	-24	*	(57	/	215)	=	-6.3627907
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Castle Park Elementary											-28

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	67832	2436	-	2436	=	0	*	(54	/	212)	=	0.0
4	67833	2472	-	2485	=	-13	*	(49	/	212)	=	-3.00471698
5	67834	2450	-	2528	=	-78	*	(61	/	212)	=	-22.44339622
6	67835	2515	-	2552	=	-37	*	(48	/	212)	=	-8.37735848
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Castle Park Elementary											-34

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-52	-33	-36	-28	-34	-183.0	-36.6

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: -9.6

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -63.6

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	92%	90%	90%	91%	92%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file