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	1441410	2415	-	2436	=	-21	*	(59	/	195)	=	-6.35384614
4	1441411	2454	-	2485	=	-31	*	(77	/	195)	=	-12.24102561
5	1441414	2487	-	2528	=	-41	*	(59	/	195)	=	-12.40512818
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for Clarence Lobo Elementary											-31

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	45369	2430	-	2436	=	-6	*	(62	/	198)	=	-1.87878788
4	45371	2456	-	2485	=	-29	*	(64	/	198)	=	-9.37373737
5	45372	2496	-	2528	=	-32	*	(72	/	198)	=	-11.63636362
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for Clarence Lobo 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	46578	2421	-	2436	=	-15	*	(53	/	185)	=	-4.29729729
4	46581	2469	-	2485	=	-16	*	(69	/	185)	=	-5.96756755
5	46582	2478	-	2528	=	-50	*	(63	/	185)	=	-17.027027
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for Clarence Lobo 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	46589	2435	-	2436	=	-1	*	(71	/	199)	=	-0.35678392
4	46590	2463	-	2485	=	-22	*	(57	/	199)	=	-6.30150752
5	46593	2490	-	2528	=	-38	*	(71	/	199)	=	-13.55778892
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for Clarence Lobo Elementary											-20

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	46771	2429	-	2436	=	-7	*	(63	/	192)	=	-2.296875
4	46772	2457	-	2485	=	-28	*	(68	/	192)	=	-9.91666665
5	46773	2487	-	2528	=	-41	*	(61	/	192)	=	-13.02604165
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for Clarence Lobo Elementary											-25

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-31	-23	-27	-20	-25	-126.0	-25.2

Compute the Upper Control Limit

Simply compute the standard deviation and multiply by 3 and add to the average: -13.2

Compute the Lower Control Limit

Simply compute the standard deviation and multiply by 3 and subtract from the average: -37.2

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	30%	36%	34%	42%	40%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file