<p>I have also applied for the summer internships through OSSI. From what I can tell, you wouldn’t be able to apply for an internship unless it was still available. The website also tells you once the internship is filled. Everyone I have applied for still says “not filled.” I’ve read that they usually don’t start making offers until after the deadline on march 15th. Just out of curiosity, what school level are you?</p>