In Writing Aids' grading rubrics, one of the bullets under structure is "parallelism." I >think< have heard that term used for two different things. One is topics being kept in the same order throughout a paper (eg, if you mention a, b, and c in your intro paragraph, you would address them in that order in the body paragraphs. And if you address aspects x, y, and z of topic A, then you would address them in that order for topic B.)
The other way I've heard the term parallelism used is making sure to keep grammar consistent; eg. that things in a list are in the same grammatical form (eg, NOT: "We went to the movies, the roller rink, and went to the coffee shop.")
To which are the rubrics referring?