Summer Classes to make up GPA

<p>Hey everybody!</p>

<p>Well today my friend told me that he is retaking many of the classes he got b's in order to boost his GPA. He is taking them online over the summer, he said. His current GPA, he is a junior, is a 3.56. He said that by redoing the classes over the summer and getting A's, his GPA will become a 4.0. Is it actually possible to do this? I'm not asking for myself, I don't want my friend to waste his time and hundreds of dollars (or whatever the classes cost). </p>

<p>PS he said that his old grades stay on his transcript, but his GPA will be calculated from his grade from the online courses. </p>

<p>Thanks for your imput!</p>