Of the 24 Aramoho club members who starred last weekend at the Bankstream NZ Rowing Champs at Twizel, only a handful will be turning out at this level.
WHS' Kayla Spencer will compete in the under-18s, Jessica Brougham in the under-17s and Talia Sua at under-16 level.
At Lake Ruataniwha a week ago, Spencer and Brougham earned a bronze medal in the club coxless quad sculls, teaming in a composite crew with Sacred Heart's Ella Toa, who will also represent her school tomorrow.
The other Aramoho members are either older or have moved on to larger national development programmes.
Weenink said the Wanganui School Championships have often been on-and-off over recent years, depending on participation numbers.
However, a number of local club rowers who are just starting out will spend their Saturdays training and learning, without being pushed into competition with their senior clubmates.
That was why having another tier of competition below interclub, regional and national events was so important for those first timers, Weenink said.
"They need these lead-up regattas.
"This is the development team, in a sense.
"They can compete at these regattas and maybe we need more of these things."
Starting at 9am, the first two hours of races on the river will be the heats for the under-16-18 boys' and girls' sculls - singles, doubles and quadruples.
The finals for those who qualified, plus straight finals in the smaller fields for the coxed pairs, fours, eights, and quadruples, will then continue on till just after 5pm.