Information about the Riverside Instructional Support System (RISS)--a program designed to help elementary and middle school teachers and principals monitor basic skills in reading, language, and mathematics--is provided in this handbook. The first part of the handbook identifies the components of RISS, including primary, intermediate, and middle school diagnostic tests; a class worksheet on which diagnostic test data are reported; individual profiles used to monitor and assess primary students' oral language skills, elementary students' language arts and mathematics skills, and middle school students' language, social studies, and mathematics skills; a middle school teacher judgment report; and an elementary criterion-referenced test collection. The second part of the handbook identifies skills in a number of RISS categories, including elementary oral language skills (general information, reasoning, listening, and speaking); elementary language arts skills (word study, reading comprehension, punctuation, word usage, written expressions, and study skills); elementary mathematics skills (computations, concepts, and applications); and middle school language arts and mathematics skills. (GT)