(6) A teacher or other person entrusted with the care and supervision of a minor for school purposes may use reasonable physical force upon such minor when and to the extent such teacher or other person reasonably believes such force to be necessary to (A) protect himself or herself or others from immediate physical injury, (B) obtain possession of a dangerous instrument or controlled substance, as defined in subdivision (9) of section 21a-240, upon or within the control of such minor, (C) protect property from physical damage or (D) restrain such minor or remove such minor to another area, to maintain order.