I agree with Joe. I’m a nursing major; externships are not even required to get a job nor are they required by my school. Yet I I still wanted one; I applied to 9, all over my state (NJ) and only 2 got back to me. Only one hired me. And the one that did hire me was 1.5 hours away from my new home, but luckily it was near my old hometown and I was able to live with my friend. I did it this past summer (between my junior and senior years). Keep in mind that I’m in the top 5% of my class, and I have a great resume of past job experience, extra curricular activities, etc. Yet I only got one offer, and it wasn’t even close to my house. There are all kinds of reasons to get rejected (availability, first come first serve, etc). Don’t be discouraged.
Keep trying if you want it badly enough!