美国高中所开设的AP和IB课程是一种什么 样 的课程？

数学主要上微积分，大学一二年纪水平
物理较简单。 生物、化学对国内的理科生来说都不太难

AP is called Advanced Placement, basically is College classes, and at the end of the year, you take a AP exam and score 1 to 5. For some collges, you AP score can count as college credts.
IB is called International Baccalaureate Program, where then look more seriously on science and math courses. IB also has a nation wide exam at the end of the year, and if you do well on it, you would stand a better chance while applying colleges.