<p>Even within a specific major what the ‘weeder’ classes are will depend on the specific university. What AP credit my e’school son decided to take, and what he decided to waive and retake in college would have been completely different if he had chosen his other top contender university. They use a different approach to the first two years and weeder classes are different there. It is also true at his university that STEM students take different calc classes then students in a humanities major would take.</p>