CHS allows students to bring their mobile phones to school as a means for contacting their family. However, lower level (Levels 1 and 2) students must lock away their phones (through a structured process) until the end of the timetabled lessons, so as to ensure they stay focused on lessons and make good use of their time during breaks. Upper level students are not required to lock away their phones, but are expected to be disciplined and keep their phones during lessons.