washingtonpost.com – A high school band. More computers. Foreign-language classes beyond Spanish and French. Less teacher turnover. Sex education. Better cafeteria food. Nearly three dozen high school students who met with D.C. Schools Chancellor Kaya Henderson on Monday morning put these and other items on wish lists for their schools, part of an effort to help her shape the school system’s budget for next year. After years of concentrated investments in lower grades, Henderson has declared that next year will be “the year of the high school.