"钢琴专业八级用英语怎么说"

如果你是说给老外听的就必须说明，考级是怎么回事。哪级是最高级，我也遇到过这种问题，如果你光说I've got level 8 in piano when I was...是起不到任何效果的，反而会使别人觉得你表达不清，特别是在oral test 以及introduction中。这里的专业就不用说了，已经8级了，还想怎么着啊，还够不上专业吗，这样就犯了重复的错误。你可以这么说：You know,in china,we have a competition 4 piano.If one takes part in it,he or she will get a level.level 10 is the highest level(我知道10级上还有表演级和即兴级，但为了突出8级，还是说10级是最高吧！)I've had that kind of experience,and fortunatly,I got level 8.
希望你帮到你！加油！

Grade Examination of Musical Level 8 of Current Year for Professionals in the Playing of Piano

这是证书上的说法。

the 8th grade level qualificationin in piano performance
证书上写的

Band 8 in Piano