Complex sentence: At the high school level, the most recognized All-America teams are those selected by "Parade" magazine in football and the McDonald's restaurant chain in basketball, which unlike other All-America awards actually stages an annual game involving these players.
Split into simpler sentences: At the high school level, the most recognized All-America teams are those selected by "Parade" magazine in football and the McDonald's restaurant chain in basketball. The McDonald's All-American Team is unlike other All-America awards because it stages an annual game involving these players.