Harvard University

Top international colleges like Harvard, Cambridge etc. do not have any fixed eligibility criteria for getting admission in one of their colleges. It completely depends on the outlook of the candidate. Performing well in international entrance exams like GMAT/GRE helps as that is one of the main indicators or measures which are used by foreign universities to award admission. The candidate should also have a strong undergraduate degree (Academic) and strong inclination towards extra-curricular activities. All these factors combined should help you portray a decent application for gaining admission in the top colleges abroad.
Moreover, many reputed universities require the candidate to have completed their Masters before they can secure admission in a PhD program. Hope this helps!!

Getting admission in Harvard University for engineering: If you are applying outside the United States then you are considered as an international applicant, but the procedure to get into the Harvard University for engineering is same as the student of United States.
For admission in Harvard University, the main thing is the required standardized test scores in either SAT or ACT. Normally, you are required to take two SAT subject tests.
That can be English and mathematics.
Strong English proficiency is also tested by Harvard University and for that, you need to take TOEFL exam.
After you have cleared the cut-off to enter the Harvard University, they have a provision of taking an interview of the candidate.
If you believe you need a financial aid then you need to fill it in the form that you need financial aid from the Harvard University they will check and factor many things and consider that you are eligible for financial aid.
If you are not selected for financial aid program, it will not affect your candidacy.