'Check grade between cutoffs.'

def test_b_grade_above(self):

    self.basic_setup()
    self.submit_question_answer('p1', {'2_1': 'Correct'})
    self.submit_question_answer('p2', {'2_1': 'Correct'})
    self.check_grade_percent(0.67)
    self.assertEqual(self.get_course_grade().letter_grade, 'B')
