Presented is Stage I of the Comprehensive Approach to Pupil Planning (CAPP) System, a three-stage model for planning educational interventions in the regular and special education classrooms and for guiding placement decisions. The guide consists of the following: an overview of the CAPP System; an introduction to Stage I on classroom support (which includes a chart of Stage I activities and a breakdown of activities to be performed by the teacher, specialist, and coordinator; and a glossary of acronyms and terms used in the system); instructions for completing each section of the Classroom Support Folder used to document Stage I information; examples of notes and letters for communicating with parents; and procedures for finalizing the Classroom Support Stage. Also provided is a copy of the Classroom Support Folder which contains sections for recording teacher request for support, classroom planning worksheet, plan for alternative strategy, and additional services recommendation. (SBH)