School personnel may use exclusion to address a student's behavior: If the student's behavior unreasonably interferes with the student's learning or the learning of others; If the student's behavior constitutes an emergency and exclusion is necessary to protect a student or other person from imminent, serious physical harm after other less intrusive, nonphysical interventions have failed or been determined inappropriate; If exclusion is requested by the student; or If supported by the student's behavior intervention plan. A setting used for exclusion shall: Provide school personnel with the ability to see the student at all times; Provide adequate lighting, ventilation, and furnishings; and Be unlocked and free of barriers to prevent egress. School personnel shall monitor a student placed in exclusion and provide a student in exclusion with: An explanation of the behavior that resulted in the removal; and Instructions on the behavior required to return to the learning environment. School personnel shall ensure that each period of exclusion: Is appropriate to the developmental level of the student and the severity of the behavior; Provides support to increase the student’s self-regulation in order to return to the instructional setting; and Does not exceed 30 minutes. Parents and school personnel may at any time request a meeting to address the use of exclusion and to: Conduct a functional behavioral assessment; and Develop, review, or revise a student's behavioral intervention plan, Section 504 plan, or IEP. School personnel shall consider the need to initiate a referral to a Section 504 or IEP team if a nondisabled student has experienced excessive exclusion, to determine if the student has a disability that may require the provision of accommodations, modifications, or special education and related services. School personnel shall ensure the implementation of appropriate procedures, in accordance with COMAR 13A.08.03, if a student with a disability has experienced an excessive period of exclusion that may result in a change of placement.