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	2280441	2403	-	2436	=	-33	*	(46	/	295)	=	-5.1457627
4	2280442	2471	-	2485	=	-14	*	(46	/	295)	=	-2.18305084
5	2280445	2474	-	2528	=	-54	*	(53	/	295)	=	-9.70169486
6	2280446	2493	-	2552	=	-59	*	(49	/	295)	=	-9.79999995
7	2280449	2571	-	2567	=	4	*	(51	/	295)	=	0.69152542
8	2280450	2566	-	2586	=	-20	*	(50	/	295)	=	-3.3898305
Step 4	SUM Weighted Distance From Standard to get 2015 Difference From Standard for San Diego Cooperative Charter											-30

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	69915	2396	-	2436	=	-40	*	(47	/	296)	=	-6.35135132
4	69918	2456	-	2485	=	-29	*	(52	/	296)	=	-5.09459458
5	69920	2537	-	2528	=	9	*	(48	/	296)	=	1.45945946
6	69921	2526	-	2552	=	-26	*	(52	/	296)	=	-4.56756755
7	69924	2542	-	2567	=	-25	*	(49	/	296)	=	-4.1385135
8	69925	2565	-	2586	=	-21	*	(48	/	296)	=	-3.4054054
Step 4	SUM Weighted Distance From Standard to get 2016 Difference From Standard for San Diego Cooperative Charter											-22

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	71750	2413	-	2436	=	-23	*	(48	/	291)	=	-3.79381442
4	71752	2460	-	2485	=	-25	*	(41	/	291)	=	-3.52233675
5	71755	2495	-	2528	=	-33	*	(54	/	291)	=	-6.12371133
6	71756	2546	-	2552	=	-6	*	(52	/	291)	=	-1.07216495
7	71759	2554	-	2567	=	-13	*	(50	/	291)	=	-2.23367697
8	71760	2526	-	2586	=	-60	*	(46	/	291)	=	-9.48453606
Step 4	SUM Weighted Distance From Standard to get 2017 Difference From Standard for San Diego Cooperative Charter											-26

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	71896	2413	-	2436	=	-23	*	(47	/	299)	=	-3.61538461
4	71897	2446	-	2485	=	-39	*	(50	/	299)	=	-6.52173912
5	71900	2488	-	2528	=	-40	*	(52	/	299)	=	-6.95652172
6	71901	2506	-	2552	=	-46	*	(52	/	299)	=	-7.99999998
7	71904	2560	-	2567	=	-7	*	(53	/	299)	=	-1.24080268
8	71905	2567	-	2586	=	-19	*	(45	/	299)	=	-2.85953177
Step 4	SUM Weighted Distance From Standard to get 2018 Difference From Standard for San Diego Cooperative Charter											-29

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	72384	2400	-	2436	=	-36	*	(85	/	447)	=	-6.84563756
4	72385	2440	-	2485	=	-45	*	(81	/	447)	=	-8.15436239
5	72386	2491	-	2528	=	-37	*	(72	/	447)	=	-5.95973153
6	72387	2469	-	2552	=	-83	*	(68	/	447)	=	-12.62639816
7	72388	2534	-	2567	=	-33	*	(78	/	447)	=	-5.75838925
8	72389	2548	-	2586	=	-38	*	(63	/	447)	=	-5.35570469
Step 4	SUM Weighted Distance From Standard to get 2019 Difference From Standard for San Diego Cooperative Charter											-45

Last steps

Compute the average

2015	2016	2017	2018	2019	Sum	Average
-30	-22	-26	-29	-45	-152.0	-30.4

Compute the Upper Control Limit

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

Compute the Lower Control Limit

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

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	27%	28%	28%	27%	37%
Data source	2015 data file	2016 data file	2017 data file	2018 data file	2019 data file