"He seemed more than happy to do so and being able to chat with him has helped us understand more of how the Budget will work but also how it will impact us."
Some of the questions asked by the students included the growing inequality between rich and poor, economic issues and gangs which all exist in Hawke's Bay.
Year 11 student Louis Gaffaney attended the class especially to talk to Robertson even after finishing exams.
"I wanted to ask him about the Budget and how it would support Hawke's Bay because we face a lot of issues with water, gangs and housing."
St John's head of commerce David Ivory said that it was a great opportunity for the students to learn more about the budget and how it affects the local community of Hawke's Bay.