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ST. LOUIS – The St. Louis area is expected to be hit with a wintry mix Friday afternoon, and even a small amount of ice can do a lot of damage on untreated roads.

The winter weather could start to fall just as kids are headed home from school, but the good news is the Missouri and Illinois departments of transportation are doing some pre-treatment of roads through Friday morning.

The bad news is if it rains before we get ice, it could wash away all the pre-treating chemicals, so a lot of school administrators are watching the weather system carefully, and watching the roads through Friday.

NewsChannel 5 spoke with several districts Thursday, and the word they are all using is "monitoring." From Edwardsville to Francis Howell, most schools say there is a chance they may have to dismiss early Friday. That decision will be made between 11 a.m. and 1 p.m., depending on how fast the weather turns bad.

If they do dismiss early, bus routes will likely be modified and they say parents will be notified by email, text, robo-calls and social media.

Several of the superintendents also say they are talking to each other, sharing information about what the weather is doing and how to handle, potentially, more instruction time lost to winter weather.

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