Abstract
The Comprehensive Tests of Basic Skills (CTBS) Form S consists of 11 subtests, eight of which are combined to yield three subtotal scores and one Total Battery score. As part of the long term evalua tion of an early childhood preschool program, the CTBS was ad ministered to one sample of beginning fourth grade pupils and one sample of beginning sixth grade pupils. A factor analysis was per formed for the fourth grade sample on Level 1 and for the sixth grade sample on Level 2 of the CTBS. Results of both analyses showed but one common factor, with scant evidence for the useful ness of the eight different subtest or three subtotal scores produced by the CTBS.
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