1. Identify the specific school: You need to know the exact name and location of the high school you're interested in. A more precise location (city and state, or even country) would help immensely.
2. Check the school's website: Once you know the school's name, go to its official website. The website will usually have a section on student life, admissions, or a student handbook that will detail uniform requirements (if any). It might specify where to purchase the uniform (a specific vendor, online store, or school bookstore).
3. Contact the school directly: If you can't find information on the website, call the school's main office or email the admissions department. They can provide the most accurate and up-to-date information about uniform policies and purchasing.
In short, the process depends entirely on the *specific* school. Provide more details about the school's location, and I can help you find their website.