"考上医学大学"用英语可以说成"get into medical school"。
"Get into"是一个常用词组，意思是"进入"、"成功进入"，例如：
I'm trying to get into a good college. (我正在努力考上一所好的大学。)
He finally got into the company he wanted to work for. (他终于进入了他想要工作的公司。)
"Medical school"是"医学院"的意思，是指高等教育机构，主要教授医学相关科目。
例句：
He is in his third year of medical school. (他在读医学院三年级。)
She graduated from medical school last year. (她去年从医学院毕业。)