Chance for Columbia ED?

<p>Before you start, thanks for even entering this thread... the ugliest mark by far on my transcript is a 79 average in junior year precalc (regrettable slacking), would this be sort of counterbalanced by a perfect Math II score and math team participation? Otherwise all grades are 90+ (unweighted). Will this one math grade destroy my chances?</p>

<p>Indian, IB candidate, enrolled in highest level courses available
SAT 2290 (720 E, 780 M, 790 W)
SAT IIs: 800 Math II, 770 Chemistry
GPA: 98.6 (weighted)
Misc: Science Olympiad four years, Varsity Math Team three years, Engineering club four years (top three in national engineering competition), school literary publication (poetry, prose, etc.) one year, conducted bio/psych research two years, Gay-Straight Cooperation Club two years, taught English over summer to foreigners</p>

<p>Thank you for taking the time to chance.</p>

<p>I say … Very good chance.</p>

<p>Does my failing grade in junior year math merit an explanation of some sort? Maybe a letter?</p>