Project-Based Mathematics

Does any one know of any country, state, school which has adopted PBM as the way to teach and assess mathematics in the final two or three years of secondary school (before sixth form)? I don’t mean the use of projects to enhance the lessons or help children learn and apply concepts, but the whole three years based on projects with, say, 60% of the final assessment based on class-based project work and 40% on a written exam, for the O level.