A look at the top 25 high school football teams in the Southland: Rk. SCHOOL (W-L); Result; Next game (last week’s ranking) 1. CORONA CENTENNIAL (5-0) def. Valencia, 59-7; at King, Friday (1) 2. ST. JOHN BOSCO (5-0) idle; at Santa Margarita (at Saddleback College), Friday (2) 3. MATER DEI (5-0)...