you don't need to buy food to cook certain dishes in the sims 4. You can click on the fridge, cook and then choose from the options. The better your cooking skills are, the more dishes you can cook. If you have a computer you can buy seed packets for fruit and vegetables and grow them. They can imporve the quality of your meals if you use them.
They might add schools in updates or expansion packs, but I don't know anything about that yet. Cars may also come in an expansion pack or update.
Sims 4 isn't a completed game ;p
