"The feeling I'm getting from you is there's an assumption we're not good enough," she said.
While discussing Government funding for E-learning, Mr Walford was interrupted by a school principal who felt operational grants for ICT in schools were inadequate.
Mr Walford indicated he would sit down if audience members continued to interrupt, which prompted organiser Deborah Neilson to ask: "If you can't take the heat here, how will you take the heat during question time in Parliament?"
Ms Neilson said he had received the message teachers weren't happy with National's education policy.
"I think he's seen that clearly teachers don't like National's policy ... The Government needs to start listening to the profession."
Also at the forum were Tukituki Labour candidate Anna Lorck (standing in for Napier's Labour candidate Stuart Nash), Napier Green candidate Paul Bailey, Napier Conservative candidate Garth McVicar and Napier Alliance candidate Mary O'Neill.