It is possible to get into college with a D letter grade, however, you may have to take remedial classes that won't count towards college credit. Local colleges will probably offer more leeway.
In most places that is a D. It will put you on academic suspension.
the letter grade for 61 is a D.
A D+, which is just passing.
You getting kicked out
D+
D
D
Typically, it is a D+ letter grade. For colleges and universities, you cannot graduate with anything less than a 2.0 GPA (C).
A
b
It would be letter grade of A, or a numerical grade of 4.0.
A 2.56 would be a letter grade of C+ for institutions that grade on a plus system.