Question

My teacher told me how to revise my thesis in terms of parallelism. I am not sure what she means or how to do it.

This is my thesis:

"School uniforms should be required in all public schools because not only do they cut down on the teasing and bullying but they also help students have a better focus on school, and save parents money on clothes."

Answer 1

Parallelism means that parts of a sentence or a series need to be constructed in the same way. For example, if one part of a series has one adjective modifying a noun, then all the parts must have one adjective modifying a noun.
http://grammar.ccc.commnet.edu/grammar/parallelism.htm

School uniforms should be required in all public schools because

(1) not only do they cut down on the teasing and bullying

(2) but they also help students have a better focus on school,

and (3) save parents money on clothes.

You have a series of three elements here. #s 1 and 2 are parallel because they are comprised of full clauses.

#3, however, is the non-parallel part: "save parents money on clothes" -- this is not a full clause. What needs to be added to make it a full clause?