I could see this being a good home for a family like the Duggars - some huge family that homeschools. Industrial kitchen, school rooms, lots of bathrooms.

It's a lot of space, but it does not feel very homey. The annual maintenance bills on this house would be terrible.

My elementary school is now several dozen condos.

Here is one of them. Take a look at this home I found on Realtor.com
33 Forest St Apt 100, Lexington
$903,416 · 2beds · 2baths

https://apps.realtor.com/mUAZ/movaros9

So strange. 5 bedrooms, 13 bathrooms.
Here is the listing: https://www.pleasantviewrealty.com/property/510-lake-street-cascade-wi/

Here is an article about it. https://www.wmar2news.com/us-news/housing/wisconsin-couple-turns-elementary-school-into-home-lists-it-for-849-000?fbclid=IwY2xjawE0XwVleHRuA2FlbQIxMQABHZG4FN6-F9RaSlHMf2zYyGBR3WYnbZ-UqTjjG9acHz7j_kygiIGUdPrfJQ_aem_Cmnzq8GOirTqc6fT6GHgLA