TORONTO - Ontario has got a failing grade on a report that looked at nutrition in schools.

A health advocacy group says provincial governments are contributing to rising rates of obesity and diet-related diseases stemming from excessive salt and saturated fats.

Bill Jeffery, of the Centre for Science in the Public Interest, says the province should set strict standards on what can be served in schools.

In Ontario, Jeffery says nutritional guidelines apply to vending machines and foods that are actually served to children by community groups.

Premier Dalton McGuinty says he would make schools healthier if re-elected by banning trans fats and ensuring all school menus conform to Canada's Food Guide to Healthy Living.