This study assessed the implementation of staff development programmes for manpower sustainability in Cross River State public secondary schools, Nigeria. Descriptive survey design was adopted for the study. Three research questions were raised to guide the study to a logical conclusion. The population of the study was made up of 246 secondary school administrators selected through census approach and used for the study. A researcher-designed questionnaire titled: Implementation of Staff Development Programme Survey (ISDPS) was used to elicit information from the respondents. The instrument was validated by three experts in Measurement and Evaluation, and two specialists in Educational Administration and Planning. Split-half reliability test was employed to determine the reliability of the instrument. The reliability co-efficient obtained for the instrument ranged from 0.84 to 0.91 which showed that the instrument was adequate enough for the study. Data obtained were analysed using descriptive statistics, frequency and percentages. Findings revealed that there is low implementation of induction/orientation programmes for newly recruited teachers in Cross River State public secondary schools. There is a low implementation of in-service training programmes for teachers in Cross River State public secondary schools. There is a low implementation of Information and Communication Technology training programmes for teachers in Cross River State public secondary schools. It was therefore recommended among others that the school administrators in Cross River State should encourage the teachers to engage in training and re-training programmes in order to enhance their competency in the school system.
Keywords: Implementation, Staff Development, Sustainability, manpower