I got less and less help as I got older. But when I was old enough to start with school projects, my parents or sister would help me with things like the layout of the board, or they'd draw light lines in pencil so I could write without it going all zig-zaggy.
They never did anything that interfered with the point of the project, though. For example, I had to make a contoured map of Norway one year as a kid. My dad helped me mix the stuff that went on it, but I did all the sculpting. It wasn't very good, hah! But I think if he'd done it for me to make it look right, then that would have taken away the point of it in the first place.
When I got older, they would proofread my papers and essays, but only for grammar, spelling, and the more technical, objective elements of style. For instance, if something was grammatically correct, but worded in a very confusing way, they would mark that but let me figure out how to fix it.