Our DS is currently in 7th grade and travels to highschool for his geometry class. This year the high school is doing a 4x4 class structure?? I'm not exactly sure what that is but it means that he will be completing Geometry in one semester. He is doing very well in the Geometry class thus far. so far so good

They have offered for him to move on and take Algebra 2 in the second semester. While we are happy the class is fast-paced, is this too fast? Does anybody have experience with something like this? This would mean he would be taking pre-calc in 8th and AP Calc in 9th...
Pros and Cons??