Weekend Immersion in Science and Engineering at MIT

<p>Has anyone heard of the weekend immersion in science and engineering at MIT? Otherwise known as the WISE program? I was invited by phone, and have received financial to attend however I am wondering: How selective is the program? Is it on a first come first serve basis, or is it actually selective? Is this any indication that the school is interested and that they consider me a good match for the school? Thanks in advance!</p>