Objective: This article reports the findings from a convergent parallel mixed method study, aiming to ascertain the opinions of New South Wales (Australia) government secondary school teachers on integration of food literacy and food numeracy (FL&FN) across secondary school curriculum. Methods: Participants were invited to take part in an anonymous survey and a semi-structured interview [n (email invitations) =401 schools, duration of study=17 weeks]. Their opinions were sought on the integration of FL&FN within their own subject, in all subjects, in whole school programs and as an additional cross-curriculum priority. The collected qualitative and quantitative data were analysed separately, using analytic software programs, and discussed together. Results: Participants in quantitative and qualitative components [n (surveys received) =200, (valid surveys) =118, n (interviews conducted) =14] reported higher feasibility rates in lower secondary grades and stated several barriers and enablers for this integrative pedagogy. Conclusion: If FL&FN is to become an integral part of secondary school curriculum, a collaborative approach by secondary and tertiary education sectors is required to address two main barriers i.e., provision of teacher training and teaching resources. Implications for public education: The reported poor dietary intake among Australian adolescents and its impact on public health, cognitive development, economy, and environment requires further strengthening of school-based food and nutrition education interventions such as the proposed integration of FL&FN across secondary school curriculum. This study provides an initial insight into the feasibility of this proposal
