"Conder is ranked third in the Youth 1500m rankings with less than two-tenths of a second separating the top three," said McNab.
He added that Lennox had made "spectacular progress in the sport".
"She stepped up from the under-16s at NZ Schools in Dunedin to bolster the Collegiate team effort, and surprised herself by coming seventh and with it [earned] selection for Australia and Hungary."
The two selections come as consolation after Collegiate narrowly missed having their whole school team go to Hungary for the individual school teams competition, which is run at the same time as the international teams.
"St Cuthbert's have been selected along with Sacred Heart Auckland. Wanganui Collegiate were the boys team in 2008 and the girls team in 2010.
"It is indeed an honour to have two from the same school in the 12-strong team."