4 yo daughter can't focus / zones out during circle time

My 4 year old daughter has attended two Montessori preschools. Each Montessori teacher has reported that after a period of time in the school, she begins zoning out during circle time, in the morning, usually between 9am and 9:30am. She flops on the ground, or lets her hair hang in her face, or puts her feet over her head, or simply stares into space. At times, if she seems to like the story or the activity, she can and does focus. They say she is bright, and can follow three-part instructions. This has been consistent behavior across both schools. She is an "under the radar" child - who stays quiet except when singing as she does her individual projects. Both schools/all teachers have also mentioned that she can be willful, and will "fake cry" or throw tantrums if she has a specific expectation that isn't realized. (Waits her turn for the tire swing, outside time ends before her turn comes up, refuses to go inside because she wants to have her turn, then fake cries for over 30 minutes b/c she wanted to stay outside and take her turn on the tire swing). I'm not sure at this point if we should have her evaluated, or if she just needs time to mature, or if we as parents are doing something at home (or not doing something at home) that is affecting her ability and willingness to concentrate. What are your suggestions?