Communication has been observed and realized as a central organizational process, which lead to performance, motivation, personality and personal development in the working place. It was discovered that communication in an organization is of great need for any organisation to perform its targeted objectives. This study attempts to examine the functions of teamwork communication in achieving organisational objectives. A researcher employed the mixed research approaches that were qualitative and quantitative. Data were collected through questionnaires and interviews were conducted to the sampled heads of secondary school. In this study a researcher sampled 100 respondents from 4 government secondary schools in Magu district. The study was guided by three objectives, generally a researcher discovered that in schools there were no teamwork communication because the researched population advocated that there were no togetherness between subordinates and top managements within an organization. The findings show that within school organizations team members lack motivation, lack unity among themselves and they have no enough knowledge as far as teamwork communication is concerned. In this study a researcher gave various recommendations that for a teamwork communication to function effectively it was advised to set goals and objectives in a mutual cooperation with top management and their subordinates should participate fully in goals and objectives settings not only that but also a researcher recommended that for the betterment of teamwork communication to function well there should be tendency of top management to settle down antagonistic relationships that rises within members of school organisation and being discourage