Consider vet school to be Med school times 200 species. In medical school, you are given the tools to decide for yourself what area of interest best fits you. In veterinary school, you are required by the time you graduate to be a dentist, a general practitioner, an epidemiologist, a surgeon, and many others. The veterinarian is responsible for caring of the entire animal. Vet school is considered by most to be even most difficult than medical school. In fact, it is common knowledge that veterinary school IS harder to get in to than medical school because of so few veterinary schools in comparison to medical schools.
Your classes in Middle School will have little affect on your ability to become a vet. Get good grades in Middle School and High School so that you can get into a good college. Then take a pre-med or pre-vet major and hope you can get into Vet school, which is very hard to do, even harder then medical school.
In high school you should be focused on taking as hard of math and science classes as possible - vet schools require you to have taken calculus, zoology, physics, chemistry and several other challengings math/science courses in undergraduate college before you are eligible to apply for vet school.
There are no math classes per se in vet school, although calculations are part of most classes. To apply for vet school you need to pass Calculus I, and sometimes Calculus II depending on the vet school. An introduction to statistics as well as basic business accounting and financial statements are also helpful.
Yes, it is very competitive to get into vet school and the coursework to complete vet school is difficult.
Biology, chemistry, zoology
Good grades of course
Specific high school courses will have little to do with becoming a veterinarian. You will need good grades to enable you to get into college and good grades there in order to get into vet school. For entry into a pre-vet program, you should focus on the sciences, especially chemistry and biology. Once in college, you should expect a mix of biology, chemistry, math courses to dominate your schedule. Ask your advisor to help you design a path for your journey to vet school. Work hard, because vet school is not for the faint of heart!
There are approximately 20 different classes you have to take as an undergraduate student to apply to vet school. Once in vet school, there is a four-year full-time curriculum of at least 50 different classes you need to take and pass before graduation.
Most vet schools spend the first year concentrating on the foundational basics - anatomy, histology, epidemiology, some personal development and business classes.
English, math and science.
In the United States it takes a minimum of seven years of college - three years of undergraduate classes and four years of vet school.
There is very little anyone else can do to make your dream come true - you will have to do this. To become a veterinarian in the United States, you will need to go to college and take at least three years of college classes. After this, you can apply to vet school and, if you are accepted, take another four years of classes at vet school.