This handbook on Classroom Applications of Writing Assessment represents the fourth and final entry in a series of interrelated publications on the assessment of writing proficiency prepared over the past year by the Clearinghouse for Applied Performance Testing (CAPT). This handbook was written to meet the needs of the classroom teacher who is teaching writing, and who wishes to incorporate performance assessment strategies into that instruction. Specifically, the handbook provides classroom teachers with (1) background information on the basic principles of three strategies for evaluating student writing samples: holistic, analytical and primary trait scoring; (2) extensive experience in the application of these scoring strategies to hypothetical samples of student writing; and (3) a series of very practical and immediately useful ideas for using these scoring strategies in day-to-day writing instruction. (Author/GK)