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: 
Music is such a big field that it isn't really possible to answer this.

There are organisations and colleges such as Berklee which have some international reputation, it can be helpful to have something from them.

But in many areas, the qualification is simply showing you can do what is needed. For instance, as a jazz musician you are likely to pick up work by showing you can play your \*\*\*\* off without actually being an \*\*\*\*.

Music is a field that is extremely results driven. Pieces of paper don't really make much difference when you are on stage. Being able to be there on time, looking the part, and playing well are the main thing. Even people who do study at conservatory will often acknowledge that the main benefit was contacts they made, rather than the actual qualification.
**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.**