<p>I took AP Biology as a Freshman, and AP Chemistry, Statistics, World History, Human Geography, and Environmental Science as a sophomore (the last three were self-studied.) Any of these are achievable, though all the math and science AP's, other than AP statistics, should not be taken without teachers. Honestly, any AP is easy with enough effort throughout the year, and if they're self-studied, enough studying the week before the exam.</p>