“自动退学”常见的英文表达是 “voluntary withdrawal” 或 “self-initiated withdrawal”。
“voluntary withdrawal”： “voluntary”意思是“自愿的、主动的” ，“withdrawal”有“退出、撤离”之意，整体表达主动自愿地从学校退出的行为，也就是自动退学。例如：He decided on a voluntary withdrawal from the university due to personal reasons.（由于个人原因，他决定自动从大学退学。）
“self-initiated withdrawal”： “self-initiated”表示“自我发起的、主动的” ，同样强调退学是个人主动做出的决定。例如：The student applied for a self-initiated withdrawal after finding the course too challenging.（在发现课程太难后，这名学生申请了自动退学。 ）