Complex sentence: The Ideas to Innovation Challenge (i2i) in 2011 included the submission of 650 ideas to improve graduate management education, of these 650 ideas, 20 were chosen and are being implemented through proposals from schools and other educational institutions.
Split into simpler sentences: The Ideas to Innovation Challenge (i2i) was established in 2011 and featured the submission of 650 ideas to improve graduate management education. Of these 650 ideas, 20 were chosen to be implemented through proposals from schools and other educational institutions.