After a bitter and bruising political season, one school's decision to formally promote kindness couldn't have come at a better time.For the second year in a row, Carson Valley Middle School students are celebrating 15 Days of Kindness."After completion of the program last year, we polled students, and 93 percent said 15 Days of Kindness contributed to a positive shift in the school's climate, that it made a difference," said CVMS counselor Tracey Wadelton. "We have that same sort of energy this year. What we're looking to do is not only shift the climate in our school, but also in …