Based on a small subset of ISO/IEC 15504:2006, a Process Assessment was performed in the capstone project of a Bachelor in Computer Science. Parallel to this assessment, students performed a continuous self-assessment using an ability model based on 15504 Base Practices and Work Products. This paper highlights how students' self- assessment and teacher's assessment are correlated. The capstone project itself implements major constructivism principles. This paper presents also the students’ point of view through different questionnaires and students’ participation to the paper.