Teacher in charge Peter Reid said he is hoping for a podium placing, but emphasised it is a "hugely difficult task" against some of the best of the country's top youth talent.
There is a strong family connection as leading player Kyle Butters is joined by sister Paris and their cousin Rebekah Butters-Chamberlain.
Sam Russell, Michael Park and Gabrielle Hiri are the other squad members.
Last year with Kyle Butters and the same three girl players, WHS lost to power schools St Kentigern (Auckland) and St Andrews (Christchurch) in the opening rounds, but then fared better to beat Feilding High, Burnside High, and finally Bay of Plenty's Trident High in the playoff for fifth in the Mixed Grade.
A world-ranked junior, Kyle Butters went undefeated in his singles games and this will be his last year contesting the championships.
The Butters' first cousin, Paige Hourigan, was successful as St Kentigern's won the Girls Grade in 2013.