I think that forcing students to give up their phones during school, will make them sneaky and devious.

They will feel the need to hide their phones and sneak them in. I think resorting to something as extreme as this is not necessary. 

These pouches are also very expensive, especially considering pur school system can't even afford other less important things. Each pouch is about $20 each, now take that times how many students are in our school. That's a lot of money we could he using elsewhere.

Although, this is a very overused "excuse", but what if there is an emergency. Yes, there is school phone and yes, there is a teacher that could help. But, some kids may not feel comfortable talking about it. Usually when its an emergency, its a private issue. 

All in all, i think yondr pouches are stupid and make students resort to sneaky methods.