The level of nutritional knowledge and food selection practices in middle school competitive cyclists following a nutritional class and a food selection drill were evaluated. Fourteen middle school cyclists (9 boys & 5 girls) who had never participated in any nutrition programs before the study were recruited. The basic nutrition knowledge (BNK) and food selection drill (FSD) were tested before and after the class. BNK was evaluated by a questionnaire that questioned nutrient sources (25 items, answering one of 'high' 'low' or 'don't know') and the functions (5 items, answering one of 'yes' 'no' or 'don't know'). For FSD, they were freely allowed to choose any of 120 real-looking food items setting on a table. The nutrition class provided information about the basic nutrients as well as food composition, and sports nutrition for young cyclists. Before and after the class, the correct answer of BNK was 14.3±3.7 (47.6%) and 20.0±3.0 (66.7%) (p<0.05), and the number of 'don't know' was 6.7±5.6 (22.4%) and 1.8±2.2 (6.0%), respectively (p<0.05). The composition of the selected foods for carbohydrate, protein, and fat was 56.6±10.4%, 17.5±5.3%, and 23.9±7.4% before, and 69.5±11.3%, 14.0±4.1%, and 15.6±8.7% after the class, respectively. The total food calorie was 1,116±340 kcal before and 1,127±524 kcal after the food selection drill (p>0.05). The nutrition class containing a drill program emphasized on nutrients and food compositions for young cyclists was effective in improving nutritional knowledge and food selection practices. After the class, they selected more carbohydrate rich foods. However, according to dietary record in real life following the education program, their dietary pattern did not reflect the program, and the pattern before the program was sustained. It is proposed that a continuous nutrition and diet management program is necessary after a nutrition program.