Tex. Penal Code § 9.62: EDUCATOR-STUDENT.

The use of force, but not deadly force, against a person is justified:

(1) if the actor is entrusted with the care, supervision, or administration of the person for a special purpose; and

(2) when and to the degree the actor reasonably believes the force is necessary to further the special purpose or to maintain discipline in a group.

Acts 1973, 63rd Leg., p. 883, ch. 399, Sec. 1, eff. Jan. 1, 1974. Amended by Acts 1993, 73rd Leg., ch. 900, Sec. 1.01, eff. Sept. 1, 1994.