At my community college, the first calculus based physics courses (the predecessor to modern physics) are split into 3 semesters: mechanics, electromagnetism, and thermodyamics/light. As long as you take the mechanics part first, you can choose which one to take next. This summer session is 8 weeks, and they are offering the thermodynamics class. I don't have to take it over the summer, but I strangely want to. I made an 'A' in my mechanics course but it was a close A that I had to work hard for, and so I question my ability to make an 'A' in this summer session course, would probably get a B. My GPA matters a lot to me now since i screwed around in my biology and math courses and ruined it. Is it a bad idea to cram a 17 week physics course into 8 weeks, even if the 8 weeks entails full immersion into the material? And does this course, introductory thermodynamics, is its material so crucial to my future higher level physics courses that it isn't worth taking the risk of "cramming"?