A person who wants to be employed as a public junior high school principal in Taiwan has to pass the “Principal Screening” and “Principal Election”. The “Principal Screening” aims to select those who are suitable for prospective principals. Therefore, its importance is no less than the “Principal Election”. This study uses document analysis to compare the differences of recent principal screening guides among the six municipalities in Taiwan, presenting the current status of the screening of principals, and proposing eight characteristics which are worthy of learning. The eight characteristics are: “set the inter-office administrative experiences as the basic qualification for the screening of principals”, “take documentary cumulative-points as a threshold “, “give more documentary cumulative-points to person who majored in education”, “give no documentary cumulative-points of the performance review of teacher”, “encourage those who are willing to take responsibilities”, “pay more attention to gender equality education”, “the cultivation-before-recruition mode”, and “emphasis on engineering experiences”.