WHS director of rugby Chris Friedel said Malcolm's selection was no surprise.
"He's a little magician. He's small but he can tackle," he said.
Friedel said his kicking range had been turing heads to with a 50-plus-metre kick impressing those at the Massey Rugby Institute.
"He's unassuming, but he's talented."
"He absolutely deserves everything that comes his way, he's got such a great work ethic."
Friedel said he was a stand-out for the WHS team and had got them out of a few tight patches. "Expect good things from a Wanganui born and bred man."
Further camps and games are planned to select the squad for the 2015 Junior World Championships next June in Italy.