You might be able to get away with asking, "how was your day at school" right at the beginning of the school year, but no long after. After all, there are new teachers and friends to talk about, new projects, new classrooms, and new backpacks to talk about. But in a month? Your question about their day is going to result in a one-word answer: "good." That doesn't give you much information.
Asking questions about specific moments, or questions that include a number are going to get your kid to open up about their day. There's nothing wrong with the old standby, "how was your day at school?" but come January, you are going to want something new to ask.
Emily is putting her English and Humanities degree to use editing and writing all over the world. Trying to see all 7 world wonders (while visiting as many countries as she can in between), Emily loves wandering alleyways, beautifully photographed food, stumbling upon impromptu flea and food markets. She can usually be found camera in hand, munching on a street food and never has her headphones out of reach.