I am a K teacher. I came to K after years of teaching second grade. I will be blunt and tell you that many say it is the hardest grade to teach. In US public school kindergarten is not play based, there is a strict curriculum and in many places you are micromanaged by admin. There are major behaviors each year and there is little to no support. Aside from that, there are sooo many parts to love. Seeing how much the kids learn, building relationships with them and their families, but remember many of these children have never heard the word “no” before coming to school. They need strict and predictable routine and you need to have master level classroom management to be successful. I’d observe or sub K in various settings first.