Do I need a police background check for a tourist visa to Thailand that I will convert to a non-B visa for teaching?

Hello all, I had a quick question about police background checks. I am hoping to enter Thailand on a tourist visa and convert to a non b when I secure a teaching job. I am a US citizen. I was wondering if it is required for me to get a police background check in order to get the visa. If so would a FBI background check like the one at this link be enough for the requirement? [members only]/#/ Is it required for me to get a background check in the US or can this be done in Thailand with the Thai police? Or both? If I get the background check here in the US does this need to be authenticated or notarized in some way? Does a regular check work or does it need to specifically refer to working with children or something? Thanks for the advice.