Requirements for studying in high schools in the UK and visa application materials | UK study visa tuberculosis

In order to make students more competitive when applying for British universities, many parents will send their children to study in British high schools. So, what are the requirements for studying in a British high school? What documents are required for a British high school study visa? The following is about the requirements for studying in a British high school and the application documents for a visa, the British study visa, and the requirements for a British high school study visa.