I've been teaching for 14 years, and I've learned there is always more to learn. Some trends in education come back around over the years, and others disappear as new research brings forth new ideas. You have to be a very flexible person to be a teacher, able to bend with the times, the changing landscape of education, and the changing demands of the job. It's not easy, but it's never boring. I always tell people that a teaching career is a long-distance race, not a sprint - you have to pace yourself. It's a fantastic career, but not a job you should consider as a fall-back position (as in, "If nothing else, I can always teach"). If it's not in your heart to be a teacher as your life's work, you probably shouldn't do it.
The field of education is getting more complex by the minute. Federal and state laws and regulations, district requirements, etc... are always changing. Public education is very diverse in its opportunities for teachers and students. It's not equal for all, or even adequate for all, that's for sure. But there are so many reasons to believe in public education and to be a part of a teaching staff that reaches out to students to help them find themselves in this world.
Sometimes I am tired. Sometimes I get disgusted. That's the nature of the job. It's tough. But sometimes I have those moments in the classroom that make it all worthwhile.
I live for those moments. They keep me going.
I am always proud to say I am a public school teacher. (Don't I sound like an ad for NJEA?).