Most colleges of education in New Zealand in the past 30 years have gradually consolidated (for example, Ardmore with Auckland), with the trend in the last 15 years to consider and effect mergers with universities closely allied to them, for example, the Hamilton and Palmerston North colleges amalgamated with Waikato and Massey respectively. In the 2004–2005 period, the Auckland and Wellington colleges merged with Auckland University and Victoria University respectively. In 2007, the Christchurch College of Education merged with the University of Canterbury. The remaining stand-alone college in Dunedin merged with the University of Otago in January 2007.