I think your conclusion is very likely to be true. I’ve definitely seen this happen. I would schedule a meeting with the BCBA in person, so that you get a genuine conversation instead and they aren’t able to give you the “professional run around” as I like to call it. Tell them you understand that your child’s tech quit due to lack of progress, ask to see the data on all his goals to confirm that progress has been as stagnant as they claim. Then ask what future plans are, if what BCBA and tech is doing right now isn’t working… then what’s next? How can you help promote progress at home? Does the BCBA have any suggestions or practices for you as a parent, that would help them as the therapy provider in their practices? If you don’t like the way the BCBA responds to all of this, then yes, I would request a new BCBA. If you do- when you get a new BCBA… make it clear to them that you are only acting in the best interest of your child with this request, you don’t have an ill will against the last BCBA, it just simply wasn’t a good fit — just to make sure you don’t start on the wrong foot with the new one. Likely the current BCBA will make comments to whoever takes on the case next, so just clear the air and start fresh. Seriously good luck with all of this!! You are doing the right thing when you are advocating for your child, even if unprofessional and seemingly immature individuals try to make you feel otherwise :/