This is an opinion question. You need to decide what you believe is the correct answer and find evidence to support your conclusion.
For any type of art to be considered "classical," one of the first criteria is that the piece (whether it is literature, music, art, whatever) has stood the test of time. Has it been recognized as being of exceptional merit for a significant period of time? A Jury of Her Peers was published in 1917. Do you feel this is a long enough period of time to qualify it as having historical standing?
Most "classical" work has also been given positive reviews by a number of critics over the years. Do you feel this work has received that kind of attention? What are some examples?