To become an osteopath, you need to have a Bachelor of Applied Science majoring in human biology, or a degree in a similar discipline. You then need to complete a Master's degree in osteopathy. This course is only available at Unitec New Zealand.

All overseas trained osteopaths are required to a sit an exam set by the Osteopathic Council of New Zealand, with the exception being osteopaths from Australia who hold a qualification recognised in New Zealand.

Unitec New Zealand website – Master of Osteopathy information 

Osteopaths must attend courses or workshops to maintain and extend their knowledge and skills. This is compulsory for practitioners to maintain their registration as osteopaths. Most regions also have monthly peer group meetings to discuss professional issues that have arisen during practice. 

Osteopathic Council of New Zealand website – information about annual practising certificate and continuing education
Osteopathic Society of New Zealand website – information about courses and events

Osteopaths need to be registered with the Osteopathic Council of New Zealand and hold a current Practising Certificate.

Osteopathic Council of New Zealand website – information about annual practising certificate and continuing education