The use of Information and Communication Technologies (ICT) has influenced almost every aspects of our life – the household chores, education, recreation, entertainment, finance and healthy living. Its impact on formal and informal education is widely recognized and ICT is being adopted by countries as an essential intervention in its education system. The Government of Mauritius has introduced the use of ICT tools and applications into the secondary school education, as part of its agenda of making the country, the cyber-island of the Indian Ocean. In order to find out the impact of ICT training on the professional duties and development of secondary school educators in Mauritius, a pretest-posttest experimental design was used in the study. The secondary school educators were given training on ICT use for about a month while they were in service during their scheduled free time and school holidays. The ICT training components include tools like use of desktop/laptop/tablet computer, email, internet, scanner, LCD projector, interactive white board, YouTube, web access, online learning platform, etc. Their use was related to various teaching-learning activities including preparing lesson plans, laboratory work, examination, curriculum and course delivery. The sample comprised of 538 secondary school educators drawn from the different schools spread across Mauritius selected through stratified random sampling method where each school was the stratum. A comprehensive questionnaire comprising various questions on ICT familiarity and use was administered to the sample prior to the training and after the training. The performance scores of the sample before and after training were compared statistically to find out the impact. The results of the study revealed that training in ICT tools application has a considerable positive impact on the professional duties and development of secondary school educators in Mauritius.