This is a very wide perspective. In Auckland and many other places around the world there are gurukulas, where students go and study at the place of the guru.
Many devotees choose to Home-school their children, and teach them at home, rather than sending them to state run schools.
Other devotees like HH Tamal Krishna Goswami-maharaj is presently studying at Cambridge University, in England. There are many other devotees like HH Hridayananda Goswami, HH Prabhavishnu Goswami etc., who are completing their formal education so that they can teach at Univeristy level.
Through the Florida Vedic College, which is affilliated to the University of Florida some devotees like Maha Buddhi dasa, Shyanasundara dasa, Jaya Tirtha Charan dasa fill the role as professors and associate professors, teaching subjects ranging from Ayurveda, Vedik Astrology, and Archana and Pancharatik and Cultural studies.
Other devotees by their contacting people and sharing the teachings of Krishna consciousness, by introducing them to the books of Srila Prabhupad, or putting on religious, cultural or philosophical classes, seminars (MIHE, VIHE), presentations, on numerous subjects (Vedik Cultural clubs, vegetarianism, health, Deity worship, sanskritam, Youth programs, etc.)