The four areas inspected, mathematics, English, assessment, and quality assurance were all judged "very good", the highest OFSTED grade. This was part of a "sweep" covering all primary training.
The chief inspector, Chris Woodhead, has had a number of run-ins with the institute, which has sometimes been associated with non-traditional teaching methods.
Professor Peter Mortimore, director of the institute, said: "We are very positive about inspection and delighted with these results. But we don't think it's at all reasonable to visit us again within just a few months of the first inspection."