Mr. Sean Costello

HS ELA Teacher


Sean Costello is entering his twentieth year in the profession. He cut his teaching teeth in Busan, Korea as a second grade teacher in 2000. Subsequently, Sean has taught students ranging from Kindergarten age to the Master’s-level. Prior to arriving in Hanoi he taught high school literature in Shanghai, China. His passions lie in Socratic methodologies that blend reflexive writing with critically-focused classroom discussion. Sean believes strongly in student-centered pedagogy, having learned through research and experience that students excel when they are afforded opportunities for choice and leadership in their curriculum.

Sean graduated with a BA in Literature from Fredonia State College before obtaining a MS as a Literacy Specialist at the State University of New York at Albany. At Albany, he also completed doctoral coursework in Teaching, Language, and Learning for which he earned a Certificate of Advanced Studies. Sean is also a National Writing Project Fellow and has co-written several published academic articles and a book review. Sean has also presented research at several international conferences, including UPenn’s Ethnography Forum and NCTE. His professional interests lie in teacher research and learning theory.

Sean hails from Buffalo, New York and retains a passion for his hometown football and hockey teams. He is an avid reader of essays and literature, an active swimmer, a lover of the outdoors, and a motorcycle enthusiast.


  • Bachelor's degree in Literature, Fredonia State College, U.S.
  • Master's degree in Education Literacy, State University of New York at Albany, U.S.