WINSTON " Cora McSperritt doesn't look forward to weekends. She'd rather be at school.She's excited about her first year on the student council and what her eighth-grade year will be like at Winston Middle School."They do do things that make you want to come to school," Cora said.That's by design. Two years ago, Winston Middle School students weren't going to school as much as the federal government expected, and the school was put into "school in improvement" status. Schools that stay in improvement status are sanctioned under the federal No Child Left Behind Act.By the 2004-05 school year, attendance wasn't …