A note is shown near a phone holder in a classroom at Delta High School, Friday, Feb. 23, 2024, in Delta, Utah. At the rural Utah school, there is a strict policy requiring students to check their phones at the door when entering every class. Each classroom has a cellphone storage unit that looks like an over-the-door shoe bag with three dozen smartphone-sized slots. (AP Photo/Rick Bowmer)
Kelli Anderson takes attendance from the rear of her Language Arts 9 class at Delta High School, Friday, Feb. 23, 2024, in Delta, Utah. At the rural Utah school, there is a strict policy requiring students to check their phones at the door when entering every class. Each classroom has a cellphone storage unit that looks like an over-the-door shoe bag with three dozen smartphone-sized slots. (AP Photo/Rick Bowmer)
A ninth grader places his cellphone into a phone holder as he enters class at Delta High School, Friday, Feb. 23, 2024, in Delta, Utah. At the rural Utah school, there is a strict policy requiring students to check their phones at the door when entering every class. Each classroom has a cellphone storage unit that looks like an over-the-door shoe bag with three dozen smartphone-sized slots. (AP Photo/Rick Bowmer)
A phone holder hangs in a classroom at Delta High School, Friday, Feb. 23, 2024, in Delta, Utah. At the rural Utah school, there is a strict policy requiring students to check their phones at the door when entering every class. Each of the school's 30 or so classrooms has a cellphone storage unit that looks like an over-the-door shoe bag with three dozen smartphone-sized slots. (AP Photo/Rick Bowmer)
A ninth grader places her cellphone in to a phone holder as she enters class at Delta High School, Friday, Feb. 23, 2024, in Delta, Utah. At the rural Utah school, there is a strict policy requiring students to check their phones at the door when entering every class. Each classroom has a cellphone storage unit that looks like an over-the-door shoe bag with three dozen smartphone-sized slots. (AP Photo/Rick Bowmer)
A sign is shown over a phone holder in a classroom at Delta High School, Friday, Feb. 23, 2024, in Delta, Utah. At the rural Utah school, there is a strict policy requiring students to check their phones at the door when entering every class. Each classroom has a cellphone storage unit that looks like an over-the-door shoe bag with three dozen smartphone-sized slots. (AP Photo/Rick Bowmer)