USA universities follow first come first serve basis while recruiting students. Therefore students who apply early stand a stronger chance during admissions. For Fall intake students should start the admission process about 8 months in advance.
Students need to fill an online application. Most universities have an admission fee which has to be paid online. The online confirmation along with physical copies of admission documents have to be sent to the university. The documentation for admission s fairly detailed and varies with university. It usually covers academic documents, financial documents recommendations, SOP etc (for a detailed list, contact any of our offices).
Many universities also require online score reporting. It usually takes 3 months for the university to process application. Some courses and specializations may take more time. The admission confirmation document is called I20 (or IAP66 in some cases) and this document is the basis for visa processing.