Mr. Manna has been with the Lenape Regional High School District at Seneca High School since 2004. He has also taught at Shawnee High School and at the Lenape Regional High School District's Sequoia Alternative Program. Prior to coming to Seneca, Mr. Manna taught in Maryland and in Japan. He also holds ESL and TEFL certifications. 

Mr. Manna's current course schedule includes English IV, ESL, and Creative Writing, and Literature of the Holocaust.