ENDEAVOUR Sports High School are bracing to halt an ambush as they prepare for Patrician Brothers College, Blacktown, in the final of the rugby league schoolboys knockout competition at Toyota Stadium on Sunday.
About 20 busloads of supporters from Patrician Brothers College are expected to storm onto the home of Cronulla Sharks, threatening to outnumber the Caringbah-based school, despite the ground being just kilometres away.
Endeavour coach Dave Howlett has issued a challenge as the school looks to win its first competition since 2006.
"We'd like to the think we are going to have some home ground advantage there," Howlett said.
"We need the whole area behind us so we can create that advantage.
"It's super important for the boys."
Endeavour progressed to the final with an 18-12 win against Queensland-based Keebra Park State High School earlier this month.
They face a tough battle against Patrician Brothers College who boast five Australian schoolboy players.
Endeavour's fullback Alex Johnston is the school's lone Australian player while 17 of the 20-man squad are either St George or Cronulla juniors.
"On paper they are unreal," Howlett said.
"We've had a little break since the last game and everything is going OK.
"There is a real buzz at the school."
NRL players Chase Stanley, Blake Ayshford, Anthony Cherrington, Dean Whare, Brett Lane and Martin Taupau were all part of Endeavour's last title win.
The match kicks off at 10.45am.