When I was in elementary school, I was in a single classroom the entire day. I would have different teachers come in and give classes, but we as students wouldn't change our classroom. When I was in high school, we were in two classrooms, first half and second half of the day.
There seems to be a term for every single possible classroom arrangement, but I haven't found one for this. I've seen it once called "Homeroom," but the Internet seems to disagree (https://en.wikipedia.org/wiki/Homeroom amongst other places). Any suggestions?
Additional context: The company I'm working for is building a school software so terminology is critical when initially setting up courses/classrooms etc. We've spent a ton of time researching terminology, but this one has us completely stuck.