There have been many successful examples of new methodological approaches developed to help students in computer programming courses. Of these approaches, the peer assessment mechanism could be useful in providing students with opportunities to learn from one another, improve their learning experience and reach efficient learning outcomes. The paper presents and analyses an improved system based on the received evaluations of a previously developed web-based programming-assisted environment. This system automatically manages the peer code review process and delivers feedback to peers in a manner that favours the incremental learning of the concepts presented throughout the course. The experimental results are focussed on the impact of this system on students' programming competence, time management capabilities and student engagement.