SAT I - Reasoning Test
The SAT-I is a three hour, primarily multiple-choice test that measures verbal and mathematical reasoning abilities that develop over time. Most colleges require SAT-I scores for admission.

The SAT reasoning test is of 3 hours and 45 minutes and is classified into three main sections. These are Critical Reading Section, Writing Section and Mathematics Section. All the three sections are further divided into 3 parts, making a total of nine. Apart from these there is a tenth section, which is called the Experimental Section. The experimental section does not count in the final score of the SAT TEST and can be any one of the previous sections. The purpose behind the experimental section is to try new questions for future and make SAT a fair test

SAT II - Subject Based Test
The subject test of the SAT TEST is held to test the students for their knowledge in a particular subject .There are 5 categories of this test. These are English, Mathematics, Science, History and Languages (which can be German, French, Italian, Spanish, Chinese, Latin, Japanese or Korean). The time allotted for each subject test is 1 hour. There are generally multiple-choice type questions, however some subjects have a specific format.