I visited NICA in Melbourne last January and was VERY impressed:
What We Do
NICA provides professional training through a three-year Bachelor of Circus Arts, preparing students from across Australia and around the world for exciting careers in all facets of the circus industry.
Based at Swinburne University of Technology in Melbourne, NICA is the only training institution of its kind in Australia.
Our students graduate with awe-inspiring circus and performance skills and are equipped to work nationally and internationally. …
NICA offers short courses for children, teenagers and adults, and supports the circus industry with professional development and master classes.
Auditioning for one of the top Circus schools is still the best way to pursue a career in circus. Staying strong and injury-free is highest priority.
Many high level artistic gymnasts find the work load easier at Circus school than at their clubs.
Gymnastics Coaching.com 