§ 3028-a. Students under twenty-one years of age suspected of alcohol abuse or narcotic addiction. Any teacher, school administrator, school guidance counselor, school psychologist, school drug counselor, school nurse, supervisor of attendance, attendance teacher or attendance officer having reasonable cause to suspect that a secondary or elementary student under twenty-one years of age is a substance or alcohol abuser or substance dependent, who report such information to the appropriate secondary or elementary school officials pursuant to the school's drug policy or if the school has no drug policy to the school's principal or the parents or legal guardians of such student under twenty-one years of age shall have immunity from any civil liability that might otherwise be incurred or imposed as a result of the making of such a report.