The fourth of five handbooks developed by Project HAPI (Handicapped Achievement Program Improvement), a multimedia staff development program to help teachers and specialists write effective individualized education programs (IEPs), is in looseleaf workbook format and focuses on children with visual impairments. It is reported that students who received IEPs developed by staff trained in Project HAPI had overall gains in reading and mathematics which doubled and/or tripled over the three year period with 90 to 93 percent of students reaching short term objectives on schedule. Part I of the handbook focuses on a systematic approach to the IEP development with sections on what the IEP should include, and 11 sequential steps such as initial indetification (Step 1), conducting the assessment (Step 6), selection of intervention materials (Step 8), and review of the IEP (Step 11). Part II is on assessment with three assessment matrixes: assessment tools related to specific categories of function, description of assessment tools listed in the first matrix, and unpublished and informal assessment tools. Part III is on intervention with an intervention matrix and lists of sample resource materials. Appendixes include model IEPs, addresses for vendors and publishers, and a handbook evaluation form. A separate training package contains the script of an accompanying audiocassette, sample forms (in English and Spanish), and the pre- and posttest. A 60 minute video proqram with guide is also available for the program. (DB)