Umich Language Proficiency Information 填写

填Umich Application遇到这个问题
Language Proficiency Information
Indicate your proficiency in any language(s) other than your native language.

Proficiency in
下面这几个问题每个有三个选项，High/Mid/Low 是按照托福的成绩选择吧？
Listening
Reading
Speaking
Writing

下面这几个问题都是单纯的填空题，第一个比较好填，高中三年都有学，第二个是填学校有多少个课时，多少个学期上过英语课这种么？最后一个要怎么填呢？感觉一直都有多多少少自学或报班学英语，没怎么间断。
Years of study in high school
Terms of study in college
Additional training/experience

求解答，笔芯