Just at a glance, I'd have two concerns. (1) Squeezing four years of high school math into two could affect the time available for depth that isn't included in ordinary high school courses. The schedule seems to overemphasize calculus at the expense of other mathematics (see, e.g., Ruczyk,
The Calculus Trap). (2) I didn't see what the path is prior to algebra other than enrichment. Elementary and prealgebra-level math have room for acceleration but it isn't clear how the elementary student gets through that and prepares for the test to start algebra except on his or her own. It's quite possible that I didn't look closely enough.
