Does Sentence Variety Correlate with Superior Academic Writing Grades?

The researcher's assumption was that the accurate use of a variety of sentence types would equate superior grades in writing samples. From these marks, it was also assumed that students who varied their sentence constructions performed better in class (e.g., timed writings, paragraph exercises, journals, and blogs received better grades). A higher frequency distribution meant that students were receiving consistently higher grades than those who relied on minimal variation.