Homecoming dance is in the Fall. Because is informal, so the length of the dress is depends on you. But most of girl will choose short length. It is more cute and sweet.
Of cause, if you do not short style, why you do not try a high-low hem style prom dress? This kind of dress is short in the front. The back is longer than front. The back could be floor length if you like, also, this style could be to ankle length. It is depends on you. The high low hem style is very popular in the year 2014 and 2015. You are special and unique in this kind of homecoming gown.