I am not sure where you are going, but I've never heard of a vet student buying a microscope for school. What I would recommend, is for classes like parasitology... get a good small digital camera.
What we all did, and it WORKED GREAT, is take a picture of the slide through the microscope with the camera. I know it sounds ghetto, but it works surprisingly well. Then, when you have all the pictures (helps if you break them into 2-3 groups of students, each getting a picture) you can make a nice PP with the picture and what it is.
Don't know about anyone else, but looking at 50 slides in 2 hours, and then being able to identify the slide for the practical is pretty useless. And going into lab and looking at them is time consuming and not very efficient.
However, if you have a digital picture of the exact slides/specimens (presumably that will be on the exam), then you can quiz yourself over and over and over again with a PP - i went from a C-D (first two tests) to a 97 on the final once I started doing this.
This is a sample of what you can get with a cannon powerpoint camera held up to the microscope... Making sample tests is both fun and efficient IMO, and it also works for histo and path!
Not sure if the image is going to show up...