Severe poverty, adversity, and malnutrition have irrefutable negative effects on the development and mental health of children and young people. The Life Skills Assessment Scale (LSAS), is a 5-item impact assessment scale developed in India, that provides a simple, yet valid and reliable, instrument to assess life skills of disadvantaged children and young people, with age norms of 8-16 years. In the present study, in Bengaluru, India, we used observational data obtained from 656 disadvantaged young people to extend the LSAS age norms to 17-19 and 20-22 years age groups, resulting in a simple, valid, and reliable assessment tool for children and young people aged from 8 to 22 years.