Once you decide your career, it is the time to choose the right academic course for realizing your dream. Unless you study the right course for your career, you will not be allowed to enter certain professions in India. For example, to become a doctor you must complete your MBBS and register with the Indian Medical Council; to practice law, you must complete your LLB and then register with the Bar Council of India.
Under the present education system in India, after completing school education (Metric / HSLC), one can opt for the Science, Arts or Commerce streams at 10 + 2 or the Higher Secondary level. One can also study vocational / professional courses (Diploma / Certificate) in Engineering / Pharmacy / Nursing etc. Courses are also available in Fine Arts / Applied Art / Music / Sports etc after school education 10th or Metric.
Once a student completes his Higher Secondary or 10 + 2 in Science / Arts / Commerce, he is allowed to seek admission in undergraduate and courses offering a Bachelor's Degree. Most of the students try to searching for professional courses as well. The Bachelor's Degree is the basic minimum qualification required in India to enter any respectable profession or career. However, to enter different courses at the Degree level, a student must study some subjects compulsorily at the 10 + 2 level. For instance, if you want to study Medicine (MBBS) in India you must take the science stream with Physics, Chemistry and Biology at the 10 + 2 level.
Similarly, if you want to study Engineering (BE / B.tech) in India you have to study in science stream with Physics, Chemistry and Mathematics at the 10 + 2 level.
However, there is more flexibility in the Arts and Commerce stream in the matter of selecting subjects at the 10 + 2 level as the career options available in India after graduating with Arts or Commerce are more or less interdisciplinary. So be very careful while selecting subjects in 10 + 2. Because I have already explained the details about what you can study if you opt for Science / Arts / Commerce at the 10 + 2 level and beyond. Details are also given about the numerous degrees offered in India by various Indian universities along with the minimum qualification to enter a particular degree course. Details regarding the Science, Arts and Commerce streams are also given so that you can choose what's most suitable course and degree for your dream career.