Human communication is a basic process, both in the individual's personal and social life. Furthermore, communication is one of the most important activitieswithin an organisation. At the workplace, the communication phenomenon must be studied as an interhuman relationship, as a specific form of interaction. The organisation optimal operation is based on the establishment of effective relations between individuals and groups. Thus, the internal communication becomes a dynamic factor both for the professional satisfaction and the professional performance. This article proposes an empirical exploratory study where in the internal communication is analysed related to other elements specific to the organisational flow in the school environment. The study participants are the result of a non-probabilistic sampling, based on availability criteria. The final sample includes 413 teachers in the pre-university educational system, evenly distributed geographically. The data collection was performed through an on-lineself-administered questionnaire. The study shows that the participants consider the internal communication plays a positive role in the performance of the human relations management activities, in building an organisational climate supporting performance and increasing job satisfaction. The prevalent opinion shows the profound importance the high-quality internal communication has in the activity performance, efficiency-rising, and employee-motivation, the absence thereof leading to disastrous effects. The contrary statement, whereby communicationis only seen as a human resources management tool, is rejected by most of the Respondents. As a counterweight, the Respondents have less positive opinions regarding the realities defining the multidimensional communication within the organisation they work in. Related to nature of the organisational climate, mention is made of the personal and professional valuation feeling the school organisation the teachers work in give to the latter. The research also explores the relationship between the internal communication quality and the teaching staff's attachment to the institution. In the end, the paper proposes a theoretical applied model for rendering the internal communication more dynamic and analyses the opportunity of implementing the same in relation to several organisational variables: horizontal communication, verticalcommunication, attachment to the organisation and human resources management activities.