In the US, the names vary a lot by location. Even which grades are included can change based on the local population and how they choose to organize it. My wife and I went to school in the same state, maybe 45 minutes apart, and we did not have the same names or grade delineations.
For me, pre-school and kindergarten are each there own thing. Grades 1-3 were “elementary school”, 4-6 were “middle school”, 7-8 were “junior high”, and 9-12 were “high school”. We called them this based on the actual names of the school buildings. But even by the time I was in junior high, they started moving the 4th grade classes to the elementary school, so I’d assume kids in my own home town might say 1-4 is “elementary”. We didn’t have a “junior high” building. Grades 7 and 8 were still part of the “middle school”, but based on the changes in curriculum and the fact that they were held on a designated side of the building, it was colloquially referred to as “junior high”
I’ve got to recommend Monster Hunter Freedom Unite. One of the most legendary games in the series for its sheer amount of content. It might feel a bit dated if you’ve played World or Rise, but still good