''There are so many opportunities in the primary industries,'' she said. ''The practical and the theory are equally important.''
Waitaki Girls' teacher Jen Howden said some of the year 13 pupils were already aiming for agricultural careers. Others might not have enjoyed the farm work experience and would reject it.
''You don't know what you want until you meet it.''
She had hosted her class at her own orchard for their practical investigation into apples, and was keen to arrange a visit to a robotic dairy farm.
The pupils would also study production processes from pasture to plate, and environmental factors.
All the sciences were useful for primary industry careers, along with accounting, economics and marketing, Mrs Howden said.
Co-operation between the two schools involved girls going to Waitaki Boys' Fraser Farm for practical activities and boys going to their sister school to study agri-science with Mrs Howden.
The Smiths donate Perendale ewes to Fraser Farm each year, and have a pupil working on their farm on Thursdays as part of the schools' Gateway programme.
With an extra 50,000 people needed for primary sector jobs by the year 2025, some would have to come from urban populations, Mrs Smith said. She noted Lincoln students who did not come from farms tended to do better, as they took nothing for granted.
- Central Rural Life