<p>Because colleges believe that you should to demonstrate a satisfactory level of proficiency in a subject. This means and obtain overall minimum 2.0 gpa (satisfactory) to obtain a degree from pretty much any college in the U.S. </p>
<p>Grades of D is barely passing and demonstrates a minimum level of proficiency. Accumulate enough of them you will be thrown out of school.</p>
<p>my sister's school as 2.5 minimum and she got placed on academic probation 2x. The second time she ended the term with a 2.4 and she was kicked out of school. Yeah, they didn't play no games over there. She ended up transfering her credits to a lesser known school.</p>