The purpose of this study is to investigate the current status of K-12 teachers' Information and Communication Technologies (ICT) perceptions and ICT usage in their courses. The researchers used both quantitative and qualitative research approaches within data collection and analysis section. Quantitative data were collected with a questionnaire from 1429 K-12 teachers in 92 K-12 schools at 35 provinces of 12 different regions in Turkey through a representative convenience sampling method. Qualitative data were collected, through open-ended items in the questionnaire from the same participants and through interviews with 6 K-12 teachers. The results provided some evidence that there are positive perceptions about the integration of ICT into K-12 schools. The results also showed that at least one-fourth of the K-12 teachers used computer laboratories and integrated ICT into their courses. The remaining teachers either do not integrate ICT into their courses or they lack of sufficient ICT facilities. (Contains 2 figures and 6 tables.)