Ceiling tiles for drop ceilings are disclosed. The ceiling tiles have a main portion that is comprised of a sheet of material, such as tile material, and a baffle portion. The main portion has an enclosed slot, and the baffle portion inserts into the slot such that with the ceiling tile in an installed orientation, the baffle portion extends downwardly from the main portion. The baffle portion has a flange on one end that is larger than the slot in at least one of width or length, such that the flange retains the baffle portion in the slot. Drop ceilings that use these ceiling tiles are also disclosed.