The Coaches Training Institute

CTI® (also known as The Coaches Training Institute ®), is the largest in-person coach training school in the world. With more than 50,000 people from more than 100 countries, trained worldwide, including employees of upwards of half the Fortune 500, CTI's transformative learning programs successfully demonstrate coaching as a core leadership competency. The book, Co-active Coaching, is the most popular book on coaching, often used by other coach training programs too, and is now in its third edition. With 100,000 copies sold, it's been published in more than 10 languages worldwide.