Topic - Tiffany Southwell

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In this Wednesday, Oct. 18, 2017 photo, Grace Hayes, 15, left, and Kai'Rey Lewis, 15, talk and text friends after having a discussion about smartphone technology in Tiffany Southwell's English Literature class at George M. Steinbrenner High School, in Lutz, Fla. (Octavio Jones/Tampa Bay Times via AP)

When 30 high school sophomores gave up phones for a day

By MARLENE SOKOL - Associated Press

In this Wednesday, Oct. 18, 2017 photo, Grace Hayes, 15, left, and Kai'Rey Lewis, 15, talk and text friends after having a discussion about smartphone technology in Tiffany Southwell's English Literature class at George M. Steinbrenner High School, in Lutz, Fla. (Octavio Jones/Tampa Bay Times via AP)

When 30 high school sophomores gave up phones for a day

By MARLENE SOKOL - Associated Press