@TubbyUnicorn
Things that don't contain milk and are commonly eaten in schools
Curries (meat or veg) and Rice
Baked potatoes and Beans (fair enough no cheese)
Fish and Chips
Burgers
Spag Bowls
Chili con carne
Cottage Pie
Shepherds Pie
Single Pie (as long as it's not a cream version)
Chicken Nuggets
Fish fingers
Roast Dinners (multiple varieties)
Pasta
Pasta Bake
Salads
Breakfast for Dinner
Actually most of those do usually contain milk.
Curries - most they serve in schools are creamy, which they use cream instead of coconut milk because it’s cheaper.
Baked potatoes and Beans - would probably also have butter or margarine.
Fish and Chips - the batter for the fish contains milk.
Burgers - a lot of pre produced burgers have whey protein added. So they’d have to be handmade.
Spag Bowls - can be dairy free, but a lot of people add butter to the bolognese.
Chili con carne - is usually safe.
Cottage Pie - milk and butter in the mash and cheese on top.
Shepherds Pie - see above.
Single Pie - as long as it’s not pastry made with butter.
Chicken Nuggets - often have whey protein added as a binding agent, and as long as they are breaded and not battered.
Fish fingers - should be safe as long as they are breaded and not battered as the batter will contain milk.
Roast Dinners - as long as none of the veg is buttered
Pasta - entirely depends what is served with it and the sauce.
Pasta Bake - they almost always have cheese on top.
Salads - as long as the dressing is safe.
Breakfast for Dinner eggs usually have milk added and mushrooms are usually cooked in butter, I’d also be suspicious about sausages, but everything else should be safe.
So as you see it’s very difficult.
The kicker is that whey protein is added to so much processed food, usually, completely unnecessarily, just because it’s so cheap.