The pupils wore the Canterbury colours of red and black, raising $3900 during the mufti day, organised by the school's student council.
A year 13 Enterprise group, EFF-X, is also planning to produce "I love Christchurch" T-shirts in a further fundraising effort.
Among the many Wanaka businesses and residents who also took part in yesterday's fundraising campaign were Print It, which developed "We Care" posters in red and black for shop windows, and Wanaka Paper Plus, which decorated its premises in red and black and also collected donations.