This text was prepared in a context where textbook liberalization policy in Tanzania replaced monopoly system where production of text books for schools was being done by Tanzania Institute of education. Thus, it gives a broad picture on the consequences of the liberalization policy by focusing on the quality of secondary education. Theoretical perspectives discussed in this text address both the outcome of liberal market and monopoly system of books production including the criteria for selecting relevant school text materials applicable worldwide. It means, the text demonstrates the...