Courses That Are Hard, but Not Too Hard. Finding the Sweet Spot. Courses need to be challenging, but when they become too hard, students stop trying and little learning results. So how do we find that sweet spot between hard and not too hard? More importantly, how do we create that sweet spot in our own courses through the decisions we make about content, assignments, and exams? Finding that perfect balance is not particularly easy or straightforward. Based on research, students do not prefer easy courses, but ones that are “Challenging”, but not “too difficult.” Here are some ways in which to find the line of demarcation of hard and not too hard.