Is your high schooler (or middle schooler) driving you crazy with her sleep schedule? If you think it matters, you’re right! A new study (reported in Science), measures how an all-nighter impacts the ability to learn new information.

Your child may not (yet) be doing all-nighters, but the study “suggests that just as sleep is important for consolidating new memories after they’re learned, as other studies have shown, it’s equally important for preparing the brain to learn new things the following day.”