Scores by student and course

I have more than one student doing "classes". Within a class, I've assigned different courses. For instance, under Algebra, I've assigned both Algebra 1 and Algebra 2 lessons. I can't see, for the life of me, how to do the following:

1) Download one one student's scores

2) Download only scores by class or course. If I want ONLY the Algebra 1 courses graded, how do I see that? Otherwise I have to manually and tediously go through each exercise, determine which course it is from, and record from there. There has to be a way to see ONLY one course's assignments and scores.