They just don't do subject acceleration until 6th grade, then come 6th grade, some kids are taking math at the high school (which is on the same campus) They talked a lot about going very far in depth, as far as a student wants to go but not going fast. So they'll a ton of patterning at as complex a level as DS can handle, but not move into fractions. But they might use fractions in the patterns... I'm not sure I fully understand it but they sounded very confident in their explanation of how they work it in 1st thru 5th grade.
I also learned that it's a little bit more "montessori-ish". Each kid has a math bin and a language arts bin come 1st grade. The work that they have been assigned is in that bin and it may be completely different than the kid sitting next to them. It sounds from that that our assessment that the 1st grade teachers are really good at differentiating might be right on. They're used to doing a lot of prep work to make it easy to teach each kid at a separate level.
