NEW : Federal agency releases guidance on closures related to H1N1 . Comment: Some schools have ramped up cleaning , offered hand sanitizer in classrooms . The value of closing school because of H1N1 is still being debated .
NEW : Federal agency releases guidance on closures related to H1N1 . In Maryland , schools prepare for instruction when students are n't in class . Some schools have ramped up cleaning , offered hand sanitizer in classrooms . The value of closing school because of H1N1 is still being debated .