Students are still being checked for mercury . nia wong a lot of frustration out here this morning. It was reported to us last night. Students wouldnt be spending the night but obviously from what you see behind me. That hasnt been the case. One parent tells us School Officials are using blankets to cover the windows of the cafeteria where students are staying. But were going to show you what it looks li here is cellphone video taken from within johnson middle school. You can see students huddled in the cafeteria. Waiti ng to be released. The Clark County School district says the epa is screening students for their safety and the district has to follow their guidance before letting students out. Captain ken young of ccsds brought in out of state resources to help specifcally the california epa. And theyre having to check students shoes and backpacks before they leave. Which is why this is taking so long. harnnsley 8th grade they mr bag and our shoes and other things in a trash bag and