What about co-curricular and extra-curricular and team activities done in school?

Since there is no curriculum, nothing is extracurricular. Open Learners explore what interests them which could range from Science to flying kites to music to embroidery. And this variety of interest and the time available for deep diving into their interest also gives them opportunities to interact with people with the same interest and also to go for projects, workshops, events, and most importantly travel.