This slide script, part of a series of slide scripts designed for use in vocational agriculture classes, deals with principles of the linear classification of dairy cattle. Included in the guide are narrations for use with 63 slides, which illustrate the following areas that are considered in the linear classification system: stature, strength, body depth, angularity, rump, rear legs and foot angle, udder traits, and teat placement. The introduction to the script also includes a brief discussion of the 50-point linear classification scale. (MN)