这里是2018年全美的统计。有的全美高中才只有二千多人上。总共38门,全修的紫檀有没有?
Just knowing which AP classes exist won't help you totally narrow down your choices. To give you a better perspective, check out this list of AP courses, organized by popularity (i.e., the number of students taking them):
| AP Course/Exam | # of Students Taking (2018) | 
| English Language | 580,043 | 
| United States History | 501,530 | 
| English Literature | 404,014 | 
| Government & Politics (United States) | 326,392 | 
| Psychology | 311,759 | 
| Calculus AB | 308,538 | 
| World History | 303,243 | 
| Biology | 259,663 | 
| Statistics | 222,501 | 
| Human Geography | 216,783 | 
| Spanish Language | 180,435 | 
| Physics 1 | 170,653 | 
| Environmental Science | 166,433 | 
| Chemistry | 161,852 | 
| Macroeconomics | 146,673 | 
| Calculus BC | 139,376 | 
| European History | 101,740 | 
| Microeconomics | 90,032 | 
| Computer Science Principles | 72,187 | 
| Computer Science A | 65,133 | 
| Physics C Mechanics | 57,399 | 
| Studio Art 2-D Design | 36,249 | 
| Seminar | 30,964 | 
| Spanish Literature | 27,451 | 
| Physics 2 | 25,741 | 
| Physics C E&M | 25,074 | 
| Art History | 24,964 | 
| Government & Politics (Comparative) | 24,675 | 
| French Language | 22,867 | 
| Studio Art Drawing | 20,853 | 
| Music Theory | 19,018 | 
| Chinese Language | 13,825 | 
| Research | 9,640 | 
| Latin | 6,409 | 
| Studio Art 3-D Design | 5,777 | 
| German Language | 5,053 | 
| Italian Language | 2,926 | 
| Japanese Language | 2,459 | 
| Total Number of AP Exams Taken | 5,090,324 | 
| Total Number of Students Taking AP Exams | 2,808,909 | 
Source: The College Board