tutor

Each group was provided a tutor which was trained to access food from a puzzle box by either pushing the door left or right.

She also said tutors would ask Scottish students to repeat themselves or to speak more clearly.

"I tell stories, each object has a meaning," Mr Devonport, who works with offenders and tutors fine art, said.

This happened just weeks after four US university tutors were stabbed in a park in Jilin.

Superintendent Darin Brawley, in a statement, attributed the improved test scores to its tutoring efforts, regular evaluation of performance metrics and the professional development it provided for its teachers.