When Joanna Wilson took office on the Carson City School board, she had five children in school, ranging from a senior down to a pre-schooler.As Wilson steps down from the board 12 years later, her youngest is now a senior at Carson High School."I raised all my kids, and I have five grandchildren now," she said. "It was a whole life experience."In that time, her attorney husband, Jim, was also elected judge.While it was a busy time in her life, Wilson said, she is happy she dedicated a portion of it to public work. "I'm glad I did it, really …