Can I get my 4 years old's teacher notes?

My four year old is in a preschool program and over the past 3 months the teachers have reported some impulsive behavior and space issues that we are not seeing at home. We have had two parent/teacher meetings about this. Recently they asked us to speak with our pediatrician about it. The pediatrician said the behavior they are concerned about is typical for a 4 yr. old boy and there is no need to see a psychologist. I have asked the school if I could get copies of meeting notes and any observational notes the teachers have kept regarding his behavior in the classroom. The director of the program says that those notes aren’t shared with parents. Do I have any recourse to obtain the notes?