Each country has its own education system at different stages, from kindergarten to master's degree, additional education, doctoral studies, and so on, and the United States - no exception. If you look at the system as a whole, then Americans get to kindergarten early enough (from 1 year old), and all kindergartens are always in elementary schools, where a child can be up to 5-6 years old.
The last two years of high school (grades 11 and 12), the guys devote to preparing for the final exams. At the end of grade 11, everyone receives preliminary assessments, which are sent along with a package of documents to the selected universities (that is, one year before the actual start of training). At the end of the 12th grade, prospective students receive final marks, which are sent to the selection committee. Then the university decides whether it will be able to give place to this student, whether his grades have worsened or improved.
Accordingly, after 9th grade, it is impossible to enroll in a bachelor's degree in America - you will miss at least 3 years of schooling.
If we are talking about a full bachelor's degree at a university, then a foreign student must complete school + the first year (preparatory, most often it is included in the first year of university studies). Therefore, foreigners study the same 4 years, they are simply additionally given subjects in English, US culture + a seminar on adaptation to the new education system
