Well, a teacher suspending a student because he talked in spanish... I wonder how she managed to become a teacher. I think it's just a case of pure ignorance, that's all. Indeed, it was paranoia: being afraid of what is unknown.
(It's funny though; sometimes I notice while playing on-line games, how some people get mad when someone talks in spanish -or in whatever language they don't know-... and other people seem to be nicely surprised. I got some canadian/french/italian friends who learned a few words from me while playing).
Spanish is... well, it's quite easy to learn (I think), at least writting/reading. The pronunciation may be a little hard for non-spanish speakers (but just as it's hard to pronounce english words for a non-english speaker). Each letter has only one sound, even vowels, while english is much richer in vowel sounds (if I remmber well, there are 11 or so vowel sounds in english, right?). But with a little practice, learning spanish is easy.