That's very, very sad... I've seen similar examples, but mostly in the public school biology programs.
I agree with pja & the others that said not to correct the teacher publically, and even in private, only in a nonconfrontational way. Ideally, a teacher should be looking out more for the TRUTH than his or her own pride, but unfortunately, this doesn't always happen, and teachers are human, too. Some of them are worse than others, and really take to heart that "I'm the teacher/superior, I couldn't possibly learn something from a 13 year old; how dare he try to correct me" stance, which I disagree with.
Especially if they don't own a reef tank and come in contact with these animals (plants?? LOL) on a daily basis, they will just swallow everything in these old books. I agree with what the others said about showing them good references in more recent, correct books. Don't make this a personal attack on their credibility & knowledge, they will almost all take this the wrong way. You could approach them after class and say "I don't think this is very accurate from everything that I've read, can I come in after school and show you some other newer references, please?" (as opposed to "Look, these books suck, you're teaching us all lies, and you don't know what you're talking about"... they will shut their ears off to this right away). If you know someone older, such as in a reef club, especially someone with a biology background who is willing to give them a call, this can also be a great ally to have on your side. Unfortunately, some teachers will not see someone younger as being worthy of correcting them, but will take it more seriously if they meet someone older with more authoritative information.
Lastly, you can print out info from the web, which is IMO one of the best sources lately if you look at the right sites... but the problem is that many in the older generation do not trust online sources as much (nor should you believe everything you read on the web... but it's more of a general distrust I'm talking about of internet sources, even ones that have been proven reliable over time). It may help if you print out from noncommercial, scientific sites such as NOAA.
If all else fails, and you feel like she is repeatedly snubbing you and not doing a professional job teaching the facts, you could go up a level and talk to the principle. I know this would be intimidating for most kids to do (not to mention "totally uncool" by most junior high standards
), but if it's a principle you believe in strongly and you feel like she is letting her personal pride get in the way of teaching factual info, then I think it's worthwhile to do. I emphasize that is only after you've tried repeatedly the other steps above, and she still blows you off.