社区语言加分

请问一下各位前辈，办社区语言的时候本科的学位和成绩单认证一定要清华认证吗？还是一般公证处认证就可以了？还有一定要学校开一份证明上课时用国语的信吗？谢谢了！

Evidence to attach to your application
If you are seeking bonus points for fluency in one of Australia's community languages, you must attach certified copies of your degree, academic transcript and a letter from your university stating the language in which your course was conducted, or evidence of your NAATI accreditation.