When using Zero Sum Gains DEA models (ZSG-DEA), classical DEA models restriction of total freedom of production or resources use is replaced by the constant sum of inputs or outputs restriction. In this paper we develop ZSG-DEA models with constant returns to scale (ZSG-DEA CCR) and employ it in the reallocation of the quantity of approved students in the "vestibular".
DEA; zero sum gains; constant returns to scale; production reallocation