Abstract
The presentation introduces the evaluation of preventive interventions. This phenomenon has extended recently.
Primarily because of prevention services are still growing and financial resources are not always allocated in an effective way. The aim of the presentation is to introduce the essence of evaluation and demonstrate its relevance and importance in school prevention activities.
Closer different types of evaluation are given, for example: needs assessment, evaluation of preparation, process and outcome evaluation etc. For each type its practical application and information brought by each type of evaluation are mentioned.
In this context some evaluation tools usefull for collecting data will be presented.