There is no age limit for a high school principal to be the deputy director of the Education Bureau. According to the relevant data, a high school principal is transferred to the director of the Municipal Education Bureau on the premise that the high school principal must meet the conditions for promotion and reuse, that is, he must first have a rank of deputy division level (management level 6) or above. If you are a vice-departmental principal, as long as you have worked as a principal for two years, you will be qualified to be promoted to a leadership position at the departmental level in accordance with the Regulations on the Selection and Appointment of Party and Government Cadres. If it is a director-level principal, go through the transfer formalities directly. Under the age of 50, the organization department shall handle the transfer according to the procedures. Those over 50 years old must be reported to the Organization Department of the Provincial Party Committee for approval before they can be transferred. No matter what level of principals, whether they are promoted or transferred, in principle, they need to go through the democratic evaluation and inspection procedures of the organization department, but the transfer at the same level is relatively simple.