If you wish to make a challenge to an assessment decision you must use the Academic Appeals Procedure. This decision can relate to a module mark you have received, your degree classification or a decision relating to your progression or withdrawal on an academic programme. You must demonstrate grounds for appeal as outlined in the procedure and be aware that disagreement with academic judgement (simply thinking you deserved a higher mark) is not grounds for appeal.
The Academic Appeals Procedure is located here:
Student Casework (Complaints, Appeals Disciplinary and Fitness to Study)