Purpose: This paper aims to discuss current issues and provide suggestions for solutions. Today's classrooms across schools in the USA are increasingly diverse. This diversity encompasses students from a myriad of cultural and linguistic and backgrounds' academic performance levels. Teacher training programs and schools are making efforts to enhance teacher knowledge in regards to this cultural and functional diversity. Problems continue to exist because it is challenging to clearly perceive the connections between the two and identify cultural basis for school performance. Design/methodology/approach: This article provides suggestions for teachers to enhance their own understanding of how cultural and ethnic diversity affects student performance and improve classroom practice in inclusive settings. Findings: The author argues there is a need for a systemic effort that encourages an ongoing debate over cultural and functional diversity, improves teacher knowledge in the area of best practices in teaching children from diverse cultural and functional backgrounds and fosters collaboration among schools and families. Originality/value: This article is an original look at teacher training for cultural and functional classroom diversity in the USA.