Ive included 3 links the Last link is the US Muay Thai Association contact them for details about school near you.
Master Chai is the President of The US Thai Association wish he was my teacher he is the best.
Phillip.
Good Luck.
http://axess.axkickboxing.com/schools_list
http://www.internationalbasketball.c...-muaythai.html
http://www.usmta.com/