current ICO student here. we're not required to work at a walmart for externships - in fact we have no walmart or lenscrafter sites on our externship website. we get a choice of 1 VA, 1 primary care/contact lens site, and 1 ocular disease/bv/peds site. our last quarter is at the student clinic and we're required to fulfil speciality rotations there in there such as contact lens, peds, advanced care, urgent care, and low vision etc