School officials in Le Roy have put up these posters in the hallways of the high school.
On Thursday, Principal Tim McArdle sent a message to parents about Yik Yak and said administrators were talking with students about use of the social media network, which is designed for anonymous posts that can only be read by people in the immediate area.
While the apps developers say it was designed for college students, there have been issues nationwide with high school students getting on the app and using it for bullying.
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