This book explores the influence of classroom communication process on students' achievement in Kiswahili language. It examines nature of classroom communication process in terms of learner's attitude, teaching styles, learning environment and feedback; teachers' and students' perspectives on classroom communication process in Kiswahili; difference between teachers' and students' perspectives on classroom communication process; gender differences in students' achievement in Kiswahili language and relationship between teachers' and students' perspectives on classroom communication process and students' achievement in Kiswahili language. The book also explores pedagogic implications of classroom communication process to policy and practice.