Bob Ladouceur, who made De La Salle High School in Concord, Calif., a football dynasty, announced on Friday that he is retiring as the team's coach.
He finished with a record of 399-25-3, and he had 20 unbeaten seasons in his 34 years as De La Salle's head coach.
Ladouceur, 58, is best known for guiding the Spartans on a national record 151-game winning streak from 1992-2003. His teams have won five CIF state championships (since 2006) and have finished No. 1 in various national rankings at least seven times.
It was also announced that assistant Justin Alumbaugh is taking over as the Spartans' head coach.
Ladouceur said he made the decision to retire before the 2012 season began.
His final game was a 48-28 victory over Centennial in the state title game on Dec. 15. He told his coaches - but not his players -- prior to the title game that it would be his last game.
"I didn't want to make it a cheesy motivation thing for our team this year," said Ladouceur, who added he coached one more season than he originally planned.