In USA Bachelor degree is done after the completion of 12 standards which is offered by various universities. Students can enrol for any of the bachelor degree as per their marks scored in 12th standard and as per this subject taken in 12th class. The most common bachelor degree is Bachelor of Arts, Bachelor of Science, bachelor of business administration, bachelor of Fine Arts, and bachelor of commerce, these are few basic degrees which are done by students. All depends on the stream you have taken in your 12th class. If you want to be a professional in a specialized field then there are other bachelor programs designed for those students.