Social class variables related to health instruction.
D000124:Achievement; D001294:Attitude to Health; D003216:Conditioning, Operant; D003479:Curriculum; D004521:Educational Measurement; D006266:Health Education; D006801:Humans; D009747:Nutritional Physiological Phenomena; D010414:Pennsylvania; D012054:Reinforcement, Psychology; D012923:Social Class