You are in an academic environment where you are being educated to become an academic with an independent mind. This includes developing an academic attitude, which involves learning to trust your own critical faculties, accepting failure, and taking responsibility for your own actions.
Witnessing Academic Fraud?
Vrije Universiteit Amsterdam finds it important to ensure that any misconduct or wrongdoings within the organization can be reported safely. The Whistleblowers’ Regulations have been drawn up for that purpose. In this context, whistleblowing can be described as an employee of or student at VU Amsterdam reporting suspicions of serious illegal or immoral practices that are taking place under the responsibility of VU Amsterdam and in the context of which a significant general social interest or an interest of the institution itself is at stake. Fraude during exams is such an immoral practice.
So if you have strong indications that your fellow students are committing fraud that might impact the reputation of your course, your faculty or VU Amsterdam, come forward. How? See this page.