Just look at where some of their former players ended up. From Mater Dei, there's Amon-Ra St. Brown (Detroit Lions), JT Daniels (West Virginia), David Bailey (Stanford), Raleek Brown (USC), Jaylin Davies (UCLA) and Bryce Young (Alabama).
From St. John Bosco, there's Trent McDuffie (Kansas City Chiefs), Wyatt Davis (Arizona Cardinals), DJ Uiagalelei (Clemson), Stephan Blaylock (UCLA), JonJon Vaughns (UCLA) and Kourt Williams (Ohio State).