In Malaysia, English is considered a ‘strong’ second language (Azman, 2016). Realising the importance of English, many Malaysian families opt to speak English at home, even though English is not their first language (Hashim, 2014; Mohamed Salleh, Kawaguchi, Jones, & Biase, 2016; Salehuddin, 2012). Therefore, this paper aims to examine the correlation between home factor and ESL students’ proficiency in the language. The participants were three bilingual Malay-English students studying at International Islamic University Malaysia (IIUM). Each family of the student practices different communication strategy at home; the first family uses the acrolect variety of Malaysian English (ME), the second family uses the mesolect variety of ME and the ...