Yea that's how it was with me
At my elementary school we had a track, bball court, and a separate soccer field. We used to do all that. Sometimes we played bball sometimes we played soccer
And then like u said around 6th grade we focused on bball and football
Same here.
But you also have to consider interest level. I mean, I enjoyed playing soccer- but it was no where near as fun to play compared to bball, football, hell even hockey. I think that is the general sentiment of a lot of kids in America.