Only 13 per cent of teachers surveyed said they considered the planning and preparing of a complete meal to be a key objective.
Much of the food that's cooked in class is based around cakes, muffins and desserts, and very little cooking includes vegetables or fruit.
So why does this concern the Heart Foundation?
Well, one in three kids is overweight or obese in this country. They have poor diets and they're not getting sound nutrition or sound nutrition advice at home.
Whose role is it to teach kids about nutrition? It's a parent's role of course. But we know that some - perhaps many - parents fall well short in this area for many reasons: short on time, short on money, short on parenting skills.
And so cooking has become something of a dying art. We tend to reach for food that's good to go. Kids open the pantry or the fridge, and look for something they can eat now. Straight from pantry or fridge to mouth.
How many times have you seen teens open a well-stocked pantry or fridge and say "there's nothing to eat". What they're really saying is "there's nothing to eat now".
How many teenagers can cook a steak, or roast a chicken? Or make a pasta sauce with meat and vege from scratch? Do they know how long to steam broccoli? Or mash potatoes? Or whip up a stir-fry rice?
Everyone can make a salad, surely? Or can they? I don't know.
But the Heart Foundation says it's a skill our children must learn and the best, most
consistent place to do that is at school.
I talked to Finn about this last night. He's 8, and he said he didn't think it was important for him to learn to cook because he was planning on living with Mum and Dad forever. I'll remind him of that when he's 16 and thinks that Mum and Dad are the world's most boring people.
But I used to plonk him on the kitchen bench when he was little and he'd watch me cooking. But now he has homework, and he's tired after school so the kitchen's not his favourite place to be. He does a bit of cooking with Granny, or should i say baking? It's usually chocolate chippie biscuits or banana loaf.
But, if you'll excuse the pun, it's food for thought isn't it? Who is teaching our children to cook? And while we're relying on schools to teach our kids the basics, good nutrition and basic cooking skills really come down to the guidance of parents and grandparents, don't it?
Heart disease kills 6000 people a year in this country. That's one person every 90 seconds.
And in most cases, it comes down to what we're putting in our mouths. And that means good nutrition is perhaps one of the greatest lessons in life.
- Rachel Smalley hosts Early Edition on Newstalk ZB