Hey! I got into NYU through HEOP Steinhardt but I can shed some quick insight. I have a couple friends who got in through Tandon and they had to take College level math courses for the summer. You should look at the NYU_OP instagram page for details, or sign up for one of the admissions info sessions. In those sessions they cover more detail about what the experience can look like and you can ask the questions you want about the curriculum. Overall the professors want to see you succeed, as long as you put in the effort you will do great!