Gwinnett schools: How do they decide to close for bad weather?

Minute by minute and day by day, some school districts in metro Atlanta are clawing back instructional time lost to unusually severe winter weather this year. Gwinnett County, Georgia’s largest district, had already altered its calendar last month to make up the three days lost to an Arctic chill in early January and a snowstorm later that month. Now, in response to another round of snow that shuttered school for four days this month, the district has announced it will lengthen 48 school days by half an hour, from Monday through mid-May. FULL ARTICLE HERE | GET SCHOOLED BLOG: Should schools cancel spring break to make up snow days? I vote 'yes.' | More Atlanta area school headlines