This paper examined the effectiveness of Ekiti State secondary school principals in disseminating information; investigated the types of social media that are mostly used by principals to disseminate information; examined how frequently the principals used social media to disseminate information; and examined the relationship between the use of social media and the communication skills of the principals. The study adopted a descriptive research design. The population of the study comprised all 187 principals and 7323 teachers in Ekiti State secondary schools. The sample of 54 principals and 378 teachers was randomly selected. Two self-designed questionnaires were used. The data were analysed descriptively and inferentially. The findings showed that principals in Ekiti State secondary schools were highly effective in disseminating information (59.8%), and they were using social media such as What'sApp (38.1%), Facebook (28.6%), Twitter (21.4%), and YouTube (11.9%) respectively, in disseminating information. The study further showed that the principals of secondary schools in Ekiti State were always using social media to disseminate information (42.2%). Further, there was a significant relationship between the use of social media and the communication skills of the principals (r = 0.631, df = 418 & p<0.05). The study concluded that the use of social media by the principals had positive outcomes and enhanced their communication skills in the secondary schools of Ekiti State.