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？
Which AP Tests Are the Most Popular?
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
