He obtained an MA in Linguistics from the University of Manouba, Tunisia, and a PhD in Second Language Education from OISE of the University of Toronto. He was Fulbright Visiting Scholar, in 2002-2003, at the University of Illinois at Urbana-Champaign where he did research on second language writing assessment. Khaled has authored several articles and presented numerous national and international conference papers about second language assessment and writing. He is member of the editorial board for Language Assessment Quarterly. He received the TOEFL Outstanding Young Scholar Award for 2012.