In the case of city and county governments selecting textbooks for purchase: "It's difficult to establish guidelines for the relationships between publishers and textbook selection officials. Political influence has given rise to monopolies of whole markets." This is the conclusion reached by Chang Chu-fen, who earned her M.A. in education from NTNU for research on the nature of the textbook selection process following the privatization of middle school arts and music textbooks.
由各縣市政府統一選購的教科書市場，「出版商與選用人員的關係難以規範，政治勢力干預，形成大市場的寡佔」，師大教育所碩士張祝芬對開放民間編印的國中藝能科教科書選用制度所作的研究指出。