You've finished your manuscript, redrafted and polished it to the best of your ability, and now it is time for someone else to take a critical look. It’s perfectly natural to think of the people you trust—say, perhaps, your English teacher friend. Sure, they may be a grammar whiz and know how to critique essays or creative writing, but editing a full-length book is a different game entirely. Here’s why relying on your English teacher friend as your book editor might not be the best choice.

Understanding Book Publishing Standards:

The publishing industry has its own rules, and the Chicago Manual of Style (CMOS) is the gold standard for books. English teachers are more likely familiar with MLA (used for academic papers) or APA (common in scientific writing), neither of which translates well to significant book editing. For example, CMOS has specific rules for punctuation in dialogue, hyphenation, and the use of ellipses, all elements critical for manuscript editing. These distinctions might seem minor, but they can make or break the professionalism of your final product. Conversely, teachers who work with MLA or APA often prioritize citations and research formatting, which don’t align with the needs of fiction. Even the Associated Press (AP) Style, commonly used by journalists, isn’t a suitable substitute. Each style serves a unique purpose and knowing which one fits your project is vital.

Editing Books Requires Specialized Skills:

Editing fiction is about story flow, tone, syntax, natural dialogue, and making sure the tale will actually sell; either to a publisher or those you are self-publishing to. I learned this the hard way with my first book when an agent sent back my novel and it looked like it was bleeding to death. Her response was frank: “We will never be able to sell this.” The punctuation was fine. The rest, not so much. The worst-kept secret in publishing is that every novel has a handful of other uncredited co-authors. As authors, our job is to write an excellent story. What happens next is a team of specialized professionals kicks it up to an even greater level. Setting aside the beta reader stage for simplicity here, professional editors fall into three categories and are employed in the following order:

1. Developmental editing to tweak the big-picture story structure

2. Copyediting for sentence-level clarity and style

3. Proofreading for the final catch of remaining surface errors

An English teacher might excel at analyzing short-form works, but handling a manuscript that can be tens of thousands of words long is a unique skill set. These aren’t typically areas of expertise for educators focused on teaching grammar, literary analysis, or essay writing.

Bias and Overfamiliarity: 

Your friend might already know your writing style and voice, which can make them less objective. Their feedback is likely to lean into reinforcing what they like about us personally and, aside from not wanting to offend, will return with dotted i's and crossed t's alongside a hearty pat on the back. Furthermore, to properly edit a book requires a huge time commitment, and time is something most teachers have in short supply.

When an English Teacher Can Help:

This doesn’t mean your English teacher friend has no role to play! They might be perfect for offering initial feedback on structure or helping you with tricky grammar questions. You want as many people in your corner—just make sure they're standing in a position to assist where their expertise has real value.