How do you know how many schools have been closed because of snow in the past week?

I don't have access to real-time information, including up-to-the-minute data on school closures due to weather. That kind of information is highly localized and changes rapidly. To find out how many schools closed due to snow in the past week, you would need to:

* Check local news websites and social media: News outlets in affected areas often report on school closures.

* Consult school district websites: Each school district usually has its own website with announcements about closures.

* Use a specialized school closure website or app: Some websites and apps aggregate school closure information from various sources. However, their coverage might not be comprehensive.

There isn't a single, centralized database that tracks this information nationwide (or even statewide) in real-time.