The aim of this research is to observe how Collaborative Web-Based Environments (CWBEs) foster higher education quality improvement by means of enhancing students’ teamwork skills, the use of CWBEs and the use of teaching methodologies, particularly PBL. A survey was conducted in three different subjects with similar characteristics in courses held at the ETSEIATBarcelonaTECH among a sample of 98 students. Results shed light on two aspects which improve teamwork performance: 1) the functionality of CWBEs and 2) the ability and motivation of students in these environments.