又看了看学校的要求，9年级正常可以选到1门AP，

但是我儿子确实选到了两门:

H14092    A.P. Physics I    Grades: 9,10,11,12    5 Credits  A.P. Weighting

Prerequisite: Rising 9th Graders: 93% in MS Algebra I & MS Geometry 
Rising 10-12th Graders:

1)One of 70% Honors Physics or 83% in Physics I or 93% in Academic PES or 93% in PES. and

2)90% in Alg. II or 83% in Adv. Alg II or 77% in Hon. Alg.II. and

3)90% in Geo. or 83% in Adv.Geometry.

H13044    Advanced Placement Calculus AB    Grades: 10,11,12    5 Credits A.P. Weighting

Prerequisite: Pre-Advanced Placement Calculus with a grade of 80%, Calculus with a grade of 85%, College Calculus with a grade of 75% or Honors Algebra II with a minimum grade of 95% and a teacher recommendation, or Advanced Pre-Calculus with a minimum grade of 95%. Students must have a strong background in Algebra 2 - at least a 75% in Honors Algebra 2, 85% in Advanced Algebra 2, or a 95% in Algebra 2.