Md. Code, Health Occ. § 2-301

(a) (1) Except as otherwise provided in this title, an individual shall be licensed by the Board before the individual may practice audiology, hearing aid dispensing, speech–language pathology, or music therapy, or assist in the practice of speech–language pathology or audiology in this State. (2) On or after October 1, 2007, an individual hired by a Maryland local public school system, State–approved nonpublic school for handicapped children, or chartered educational institution of the State to practice speech–language pathology or assist in the practice of speech–language pathology, shall be licensed by the Board. (b) (1) This section does not apply: (i) To an individual employed by any agency of the federal government performing the duties of that employment; (ii) To an individual continuously employed to practice audiology since June 30, 1988, by a county public school system, a State–approved nonpublic school for handicapped children, a chartered institution of the State, or the State Department of Education while performing the duties of that employment; (iii) To an individual employed by a Maryland local public school system, State–approved nonpublic school for handicapped children, or chartered educational institution of the State or the State Department of Education to practice speech–language pathology continuously since on or before September 30, 2007, while performing the duties of that employment; (iv) To a student or trainee in audiology or speech–language pathology while pursuing a supervised course of study at an accredited university or college or a recognized training center while the student is obtaining clinical practicum hours; (v) To a volunteer while working in free speech and hearing screening programs; or (vi) To an individual licensed to practice audiology or speech–language pathology in another state or a foreign country while the individual: 1. Provides a clinical demonstration at a training or an educational event in the State; or 2. Receives clinical training at a training or an educational event in the State. (2) The Board may allow an audiologist, hearing aid dispenser, speech–language pathologist, music therapist, speech–language pathology assistant, or audiology assistant licensed in another state to practice audiology, hearing aid dispensing, speech–language pathology, or music therapy, or assist in the practice of speech–language pathology or audiology in this State without a license if the applicant has: (i) Been granted preliminary approval by the Board to practice; and (ii) A completed application for a license pending before the Board.