I had Ms. Liu for AP Calculus AB and IB Math SL (in-person). Ms. Liu is an amazing, caring, and kind teacher. One of the best teachers at Andrew Hill hands down. She wants to see her students do well and she always spends time with them after school to help. She is probably the best math teacher at Andrew Hill! The two classes I took were tough and required a lot of work, but having Ms. Liu made it bearable and easier.