The current veterinary nursing qualification is the Royal College of Veterinary Surgeon’s (RCVS) level three diploma in veterinary nursing. It can be done on either a full time basis or apprenticeship-style alongside a job in a veterinary practice. It takes between two and three years to qualify.ualifying as a veterinary nurse. To qualify as a veterinary nurse you must: Be enrolled as a student veterinary nurse with the RCVS. Attend college-based study for a minimum of 22 weeks over the period of training before exams are sat – usually two years.