Clinical techniques currently used to assess adolescent growth and maturation are critically assessed with regard to anthropometric dimensions, measurement reliability, maturity indicators, and growth standards. While anthropometric measurements are virtually standardized throughout the world, a choice of techniques is available for the assessment of skeletal maturity, dental maturity and secondary sexual development. In addition, a variety of charts of international and national reference data are available for the comparison of individuals and groups. These assessment and comparison techniques are contrasted and compared to arrive at a scientifically appropriate set of recommendations for the clinical assessment of growth and maturity during adolescence.