Peanuts,
It wouldn't be a bad idea in the US if there were licensing of any one working with children, including music teachers. From a safety factor, and also from knowing that the person was indeed qualified to be teaching through some testing and through an audition of their knowledge. I used to rejoice that it was easy to come in through the "back door" of teaching and to gain status and recognition for your teaching success without having had the full 4 years of college and the degree. My piano education was totally private instruction, the quest to attend classes, seminars, workshops and acquired education and membership in MTNA. All the reading and research and pursuit of continued knowledge.
MTNA is a US organization:
www.mtna.orgI think membership in a thriving music teacher association is one of the best things money can buy a musician/teacher of music. I have never spent more than $150 per year to be a member since 1981 and membership has been vital to nourishing me toward accomplishment. It is a huge opportunity for personal growth and connecting with similarly minded peers and mentors. It's a good step in the right direction of establishing professionalism to your teaching. Also, the student activities within a chapter are well worth participating in with your students, too.
Today, I'm sorry to say there are people teaching piano who cannot spell the word. Unfortunately, the public things that all piano teachers are created equal. Not so. Not so by a long shot!
Please take into consideration belonging because of what it will mean to you in your career, not just the letters behind your name, or something you have to do.
I taught for 10 years before knowing about MTNA. Once I joined I felt it was a golden opportunity, and it has proven to be exactly that.
Good luck!
Betty