If it's prospective, it hasn't happened yet. Prospective students are students who might attend a school in the future. If you visit any college campus, you’ll see prospective students checking out the library, the dorms, and athletic facilities.
Prospective indicates that something is expected or likely to happen. If you’re contemplating your future, you might speak of your prospective career, your prospective spouse, or a prospective million-dollar offer to make a movie based on your fascinating life. However, avoid the common mistake of confusing prospective with perspective. Perspective, which can mean “a reasonable point of view,” is important when one wants to accurately assess prospective opportunities.