 The plaintiffs expected to graduate in 2015 until a state nursing board investigation found some of the school's faculty were unqualified and were using veterinary supplies to teach students how to care for human patients.The Arizona nursing board barred the Brown Mackie students from taking the practical nurses licensing exam and ordered the school to retrain the students at the company's expense.Thousands of former Brown Mackie College students will receive loan forgiveness as part of a legal settlement with the US government.