if your situation is vaguely like mine, I would say no. Don't go. If necessary, check jw.org clandestinely, so you have knowledge of what nonsense they are going to be told at each meeting.
My wife is an ardent JW (and lost cause) who also takes the kids to KH. I never attend. Instead I teach my kids maths and science where possible, help them with their homework, etc. I also have made sure they have good access to books and the internet. My oldest knows heaps about evolution, dna, carbon dating, abiogenesis, quantum mechanics, multiverses, ancient history, church history, periodic table, electrical circuits and electronics etc.
My tactic seems to be working. My kids seem to have picked up that most JW's know virtually nothing about those topics, whereas they learn a bit from me, learn a bit more at school, and learn a bit elsewhere, and it is all coherent. One of my kids (primary school age) said something the other day along the lines that Elders are uneducated people. At least 2 of my kids accept evolution is a fact.
I don't know your situation, but I suspect that if you refuse to go, and are the one to teach your kids stuff (tiny non-controversial bits at a time) your kids will soon be thinking that daddy is not the ignorant one. You will also be teaching them that they don't have to pander to nonsense.
Anyway, that is my 2c worth.