Douglas County students are starting the school year Monday on a positive note.Despite tougher state standards implemented in the last few years, students in the Douglas County School District were overall more proficient in core subjects this spring than they were a year before, according to test results released by the district last week.In reading, most elementary and middle schools showed improvement on the spring Criterion-Referenced Test. Of 2,905 students who took the reading CRT, 74 percent demonstrated proficiency - up from 70.9 percent in 2011. The only schools that saw a drop in reading proficiency, albeit minimal drops, were …