A Discussion of Standardized Tests

For persons who are interested in understanding standardized tests more fully the following web pages provide excellent information to help clarify the interpretation of SCAN-C and SCAN-A standard scores.

graph 4

Standard Score	Subtest Score	% Rank	Standard Score	Subtest Score	% Rank	Standard Score	Subtest Score	% Rank	Standard Score	Subtest Score	% Rank
145	19	>99	107	--	68	97	--	42	87	--	19
140	18	>99	106	--	66	96	--	39	86	--	18
135	17	99	105	11	63	95	9	37	85	7	16
130	16	98	104	--	61	94	--	34	80	6	9
125	15	95	103	--	58	93	--	32	75	5	5
120	14	91	102	--	55	92	--	30	70	4	2
115	13	84	101	--	53	91	--	27	65	3	1
110	12	75	100	10--	50	90	8	25	60	2	<1
109	--	73	99	--	47	89	--	23	55	1	>1
108	--	70	98	--	45	88	--	21

Click on this link for a discussion on:
Understanding Tests and Measurements for the Parent and Advocate

http://ldonline.org/ld_indepth/assessment/tests_measurements.html