About half of the teachers and principals who had applications to work beyond retirement age rejected lodged appeals against the decisions before yesterday's deadline.
The Education Department said it had received about 70 appeal applications, half from secondary schools and half from primary schools.
The department announced on March 31 that only 15 of the 152 applications from teachers and principals seeking to extend their careers beyond the age of 60 had been approved.
The appeal deadline was extended by a week, to yesterday, after complaints from schools that they had been given insufficient time.
A department spokesman said appeal results would be announced by the end of the month so that schools would have enough time to recruit staff.
Principal of SKH Tsang Shiu Tim Secondary School Lau Chi-fai said he had appealed while waiting for his case to be heard in court.
Mr Lau has filed a High Court writ challenging the department's decision. The case will be heard in mid-June.