This article presents the results of a pilot study about the implementation of informatics tools of social use HIUS (known as social software) perform on students of fourth grade on high school on a public school. We explored four dimensions: frequency of use, handling level, usage and type of interaction. The tools are grouped into 12 types. The population said they did not know/use many of the tools. We found that there is a high frequency of use and high skills in handling social networks, video sharing and chat services, while there is very little use and handling of tools like blogs and social bookmarking. The most commonly used mode was chat/enjoy followed by to learn and to study. The use of tools comes from own accounts and in general they add and remove content more or less in the same proportion.