Question: Are there any world-wide known Music Certification tests that you can take to use in your resume: for example, to demonstrate basic musical abilities?

I used to work in IT, where it is very common for companies like Oracle and Zend to arrange that kind of certification for a programming language or framework.

Answer: 
There are systems of graded examinations in performance for most instruments, and for theory, designed to cover the stages from beginner to pre-college.

Here's a couple of 'classical' ones

[https://gb.abrsm.org/](https://gb.abrsm.org/en/)

[www.trinitycollege.com/](https://www.trinitycollege.com/qualifications/music/grade-exams)

and one for 'rock'

[www.rslawards.com/rockschool/](https://www.rslawards.com/rockschool/)

Those are UK-based. There are equivalents elsewhere. The next step is a diploma from a music conservatoire.

A few music software companies offer certification in their products. You can become an 'Avid Certified User' in several of their products, including Protools and Sibelius.

[www.avid.com/education/certification](https://www.avid.com/education/certification)

Steinberg (Cubase) have 'Certified Training'. I guess you get some sort of certificate after completing a course.

[www.steinberg.net/en/education/certified\_training.html](https://www.steinberg.net/en/education/certified_training.html)
**Nothing completely world-wide, it seems.**

I'm just a hobby musician, but before joining this stack I had never heard of the type of "grades" people seem to use to measure proficiency with musical instruments. I live in **Sweden**, and it doesn't seem to be a thing here. There are entry exams you need to pass to get into music schools and academies, of course, and there is collaboration between universities to standardise some tests, but nothing as organised as what I see people discuss here, and certainly not for children.

Just to be sure, I asked my girlfriend. Her parents are both professional musicians, and she's been playing the violin in various organised contexts since she was a kid. She majored in music in high school, continued at [Folkhögskola](https://en.wikipedia.org/wiki/Folk_high_school#Sweden)(no idea how to translate..) and then spent 5 years at [university](https://en.wikipedia.org/wiki/H%C3%B6gskolan_f%C3%B6r_scen_och_musik) to become a music teacher. A teacher should know about this, if anyone. She had never heard of anything remotely like the "grades" either.

**There might be something that's fairly global, I don't know, but at least in one country it's not a thing.**