Peran Simanihuruk Catholic University of St. Thomas   Jl. Setia Budi No.479, Tj. Sari, Kota Medan, Sumatera Utara Indonesia Medan, North Sumatra 20133 Indonesia   simanihurukp604@gmail.com             JEL Areas: I2 : Education: General J2 : Demand and Suppply of Labor: General