Mock exams, if framed right, can be incredibly beneficial for students. Helping them to see that is part of the challenge. They can help students to start revising early, to practise effective revision strategies, to improve their knowledge, to familiarise themselves with pressure, and act as a guide moving forward. (https://www.theguardian.com/teacher-network/2015/dec/03/practice-makes-perfect-why-mock-exams-students-brains)