sorry, not 4th week. My university has three deadlines for drops. the first one is drop/add no penalties, second one is 2/24 in which we'll have to pay back some financial aid, and third one is at the 12th week with dean's permission. We've already had our first test and few quizzes which I average mid B even while doing practice quizzes and tests 10 times and doing 100 problem homeworks before each quiz
I say top 20 because I've read here and my premed advisor told me that the plastic surgery specialty is the most competitive alongside dermatology and going to a top school helps.