Final answer:
A concern with administering formal assessments in a resource classroom is that it may not accurately measure the abilities of students with special needs.
Step-by-step explanation:
A concern with administering formal assessments in a resource classroom is that it may not accurately measure the abilities of students with special needs. Formal assessments are often designed for typically developing students and may not take into account the unique learning styles and accommodations required by special education students. For example, a written test may not be appropriate for a student with a physical disability who requires assistive technology to communicate or complete tasks. It is important for the Special Education teacher to consider alternative assessment methods that are fair and accessible to all students in the resource classroom.