The all-male student group and one returnee from Indonesia had been quarantined since March 30 at Narathiwat Drug Rehabilitation Treatment Centre, where Narathiwat Governor Ekkarat Leesen thanked them for their cooperation and waved them off on Monday.
Meanwhile, 39 female students under quarantine at Rajprachanukhra 39 School in the deep South province are expected to return home in a few days.
None of the 114 students has developed Covid-19 symptoms.
Meanwhile, six men in a group of seven Muslim pilgrims recently returned from Indonesia have tested positive for Covid-19.
More quarantine centres are being established in Narathiwat to accommodate returnees and other at-risk groups.