I certainly would not consider it a fragment. KISS Level 3.2.2 includes many examples of such sentences that were written by acknowledged good writers. See: http://kissgrammar.org/kiss/wb/LPlans/WB_L3_2_2_So_For.htm .
In addition to those on the site, I have a huge collection of other examples that I have not used yet on the KISS site.
More directly, go to: http://kissgrammar.org/kiss/wb/G07/IM_TN.htm#So_For_Conj



From: Assembly for the Teaching of English Grammar [mailto:[log in to unmask]] On Behalf Of Geoffrey Layton
Sent: Sunday, October 05, 2014 9:55 AM
To: [log in to unmask]
Subject: Advice!

I'm a member of a listserve populated by AP English teachers (primarily lit but also comp), and the following issue has recently arisen. Please comment - I would very much appreciate it (I won't tell you how I commented just yet - I'd like to get your views):

Please read the following and tell me if you would consider the last sentence a fragment:
"This quote from Beowulf exemplifies not only the best of man but he worst of man as well. For this quote is a reminder to all that  standing by each other, through thick and thin,is the real test of being a man of true worth."

The paper from which this is taken is extremely weak in content, wording, and mechanics.This is marked as a fragment and with two fatal errors (she has another which the parent admits is a fragment), the rubric being used gives the student a score of 50 and, of course, the parent is questing (sic) this one sentence and is thinking it if it is changed to non-fragment her daughter will receive a B on the paper--but that is another argument.
Please respond ASAP. The principal, the teacher who scored the essay, the parent, and I  have a meeting Monday. Exams are Wednesday and Momma wants a B.

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