Designed to aid teachers, school administrators, and parents in selecting educational software for grades K-12, this guide lists 193 programs chosen from over 6,500 evaluations conducted by 30 evaluation services in the United States and Canada. Following the introduction, which provides a detailed explanation of how the programs were selected, the guide is divided into four parts. Part I provides an alphabetical listing by title of the 146 most highly rated programs as well as a listing by subject areas, which include courseware for the arts, business education, college entrance examinations, computer education, early childhood education, foreign languages, language arts, mathematics, problem solving, science, social studies, tool programs, and typing. The description for each of these programs includes the subject area, copyright date, producer, hardware requirements, price, a brief description of the program, grade level(s), brief tips for teachers, evaluators and evaluations received, and magazine review citations. Part II lists the 47 nearly qualifying programs by subject area and includes program titles, the producer, computer system(s), price, grade level(s), and evaluators. Part III provides the names, addresses, and telephone numbers of the producers of software listed in this edition, and Part IV lists the 168 most highly rated programs from the 1986 edition. Information provided for these programs includes only the publisher, curriculum area, and computer system(s). (MES)