We live today in a world where digital technologies have become complex and essential in our lives. These technologies-telephone, computer and other digital devices connected to the internet-have modified and generated many challenges in the relationships we establish with other people, information, and knowledge. The study major goal was: analyze three professional trajectories in the Federal District of Brazil regarding the use of digital technologies inside the classroom. As specific objectives: comprehend the teachers' academic formation and training; analyzing the meaning attributed to these technologies in their pedagogical practices; the working conditions of the teachers; and the digital technologies resources available at the school and available for the teachers taking part in the study. The bibliographical review we discuss two major issues regarding professional trajectory of the studied teachers: training and digital technologies. These discussions had the goal to study the complexity of the topic and its many ramifications. The study used the methodology of qualitative approach, as it is the most appropriated form to meet the objectives of the study. The research studied three teachers of a High school from the Federal District public network system in Brazil-"SEEDF"from different areas: physical education, arts, and Portuguese language. By using individual semi-structured interviews as a tool for information building blocks. Moreover, it used the interpretive analysis of information built with teachers, from five different categories of analysis. This study presents scientific and social relevance, since the analysis of the information and the results obtained have led to reflections on digital technologies in schools as part of the teachers training. The results point that: (a) the teachers participating in the study reported different reasons to become teachers. (b) In general; the teachers had continual training courses offered by the Federal District government. The training in digital technology was scarcer, especially for the Arts and Portuguese language teachers; (c) in the opinion of the participants, the school where they work provides appropriate infrastructural conditions to receive students and develop an appropriate practice, as the institution has technological up to date resources (tablets, computers, data show projectors, digital whiteboard, camcorders, smart phones, computer lab, sound system, internet connection, etc.) compatible with the needs of teaching. The meanings attributed to the use of digital technologies by the teachers were different. For the Physical Education teacher "technology is life" "It (digital technology) is very important! It's inside of our life, it doesn't have any intention to leave. And I don't want to leave it either" In this case, the technology for this teacher is an extension of the body, she thinks it is intrinsic to her life. The Arts teacher sees technology as a way to "open new paths", i.e., allows diversifying resources for her pedagogical work a...