The aim of this project is to develop a holistic evaluation tool of the indoor environmental quality of schoolbuildings in Denmark. The purpose of the tool is to evaluate the IEQ potential to ensure comfort, health, wellbeing,and performance of the occupants in school buildings. The requirements for a good indoor environmentin schools were investigated to create the framework of evaluation. The evaluation areas are withinindoor air quality, thermal, visual, and acoustic indoor environment, as well the occupants’ possibility to adjustthe indoor environment. Based on the methodology from prior tool developed for evaluation of residentialIEQ, parameters and criteria were developed within each IE parameter to fit the element that influencethe IEQ of schools. The assessment methods of the IEQ potential in schools were developed from the literaturereview of the conditions to create a good IEQ in schools, industry calculation guidelines, building regulation,and standards. As a result of the project, the groundwork for fully developing a tool to label the IEQof schools is performed and documented. Parameters and criteria are developed to assess the IEQ potentialof schools, weighting among the parameters and criteria is introduced to fit the elements that influences theIEQ of schools. A new method to present the results is introduced to communicate the IEQ of the schools onroom and building level for both users of the schools and professional consultants for design or renovationpurposes of the school buildings.