(a) As used in this section: (1) “School” means a public school as defined in section 10-183b or a private elementary or secondary school attendance at which meets the requirements of section 10-184; (2) a “professional employee” means a person employed by a school who (A) holds a certificate from the State Board of Education, (B) is a member of a faculty where certification is not required, (C) is an administration officer of a school, or (D) is a registered nurse employed by or assigned to a school; (3) a “student” is a person enrolled in a school; (4) a “professional communication” is any communication made privately and in confidence by a student to a professional employee of such student’s school in the course of the latter’s employment.

(b) Any such professional employee shall not be required to disclose any information acquired through a professional communication with a student, when such information concerns alcohol or drug abuse or any alcoholic or drug problem of such student but if such employee obtains physical evidence from such student indicating that a crime has been or is being committed by such student, such employee shall be required to turn such evidence over to school administrators or law enforcement officials within two school days after receipt of such physical evidence, provided if such evidence is obtained less than two days before a school vacation or the end of a school year, such evidence shall be turned over within two calendar days after receipt thereof, excluding Saturdays, Sundays and holidays, and provided further in no such case shall such employee be required to disclose the name of the student from whom he obtained such evidence and such employee shall be immune from arrest and prosecution for the possession of such evidence obtained from such student.

(d) Not later than July 1, 1991, each local and regional board of education shall develop, adopt and implement policies and procedures in conformity with section 10-154a for (1) dealing with the use, sale or possession of alcohol or controlled drugs, as defined in subdivision (8) of section 21a-240, by public school students on school property, including a process for coordination with, and referral of such students to, appropriate agencies, and (2) cooperating with law enforcement officials.

(e) If a pupil is expelled pursuant to this section for possession of a firearm, as defined in 18 USC 921, as amended from time to time, or deadly weapon, dangerous instrument or martial arts weapon, as defined in section 53a-3, the board of education shall report the violation to the local police department or in the case of a student enrolled in a technical education and career school to the state police.