This is just an introductory language and if you’re in a CS program, you’ll definitely move on to more advanced ones. It actually makes sense to switch to Python since it’s far more ubiquitous and accessible than Scheme. Scheme is not widely used in commercial software development, but still enjoys a presence in academia. Python has strong presence in both.
On the other hand, Pascal was my “introductory” programming language (I already knew BASIC pretty well at that point), but it certainly wasn’t the only one in my program - we did Perl, Prologue, C, C++, etc.
In a professional software development career, it certainly won’t be the last language you’ll
learn.