That's a bit righteous. This forum would not exist if it weren't for people buying on trust, and putting their faith in pet store expertise. In an ideal world, everyone would do what they should before making decisions. This teacher, at this time of year, probably wants to do a little extra for the kids by setting up a tank, probably with his/her own money. He/she is probably coaching (unpaid), dealing with large class sizes, and earning less than a whole lot of other trades. When you have 120 compositions to correct, with constructive and educational comments on each, specialized programs for kids with learning or behavioural difficulties to design, regular lessons to design, parents to be answered promptly and most likely, your own classroom to clean, fact checking a clerk is the least of your 'to do list' things.
Don't undermine people who are trying. Provide useful advice.
I have to disagree, I'm sorry.
Not that teachers aren't overworked, underpaid, and underappreciated it while doing one of societies most important jobs - all of that is of course true.
But a class pet is an extra, not an essential, and it really doesn't take much time to do some basic research on a pet before getting it. Buying one on impulse and with no real idea of the environment, care and lifespan of the animal - nor what will become of it at the end of the school year- isn't okay with me, never will be. I wouldn't accept "I'm busy and didn't do any real research before getting it" from anyone else, and didn't even before the days of the internet, when all the info you need is right there at your fingertips. I find it even less acceptable when presumably, the pet is to help educate and involve the students, isn't it? What lesson is it providing if even the teacher doesn't know or care what the animal needs? We see so many horrible examples of neglected and abandoned class pets. But what is it teaching the children? They're not learning about the animal if even the teacher doesn't know, and they're learning the opposite of responsibility, research skills or animal care.