This handbook investigates the practical application of diagnostic inventories to identify and address specific learning difficulties in classroom settings. Philip H. Mann provides a structured framework for educators to evaluate student performance, focusing on the intersection of diagnostic testing and individualized instruction. The text serves as a technical resource for teachers seeking to implement systematic assessment strategies to improve academic outcomes for students with diverse learning needs.

The subject matter points to a technical, specialist text intended for practitioners in the field of special education and remedial instruction. The framing suggests a focus on procedural utility, providing educators with a standardized approach to diagnostic assessment in the mid-1970s educational landscape.