German vs US university for Masters?

[sweetfarthing]

I got my Bachelors in Chemistry here in US and I have always wanted to study abroad but didn't get a chance to do so earlier. My friend suggested I could get a Masters in Chemistry in Germany. I looked up some programs and found a lot of them are taught in English and the tuition is covered so it sounds like a valid option to me. My concern is what happens after that? Do you think a MS from Germany will be recognized by US public school systems if I want to teach in high school here? Or should I stay here and finish the Masters? Please share your thoughts, if you have any resources, etc.
 

Thank you!