Elementary School Math Curriculum

If you were in charge, what would elementary school children (that is, grade 7 and below), be expected to learn before going to high school.

Ideally, kids would know early on whether they were going into a math/science/tech field of study or a literature/arts one.  The science kids could probably manage >>3's plan, and the parents of the lit kids wouldn't start screaming bloody murder because their child flunked out of 3rd grade math.