Yes, raccoons are crazy smart and will learn to avoid traps very quickly.
What you really want are Dog Proof Raccoon traps. Dogs nor cats will get trapped, and coons have a much harder time figuring these out, likely because you must kill them once you've trapped them (which you should be doing anyways).
the coon I constantly capture ARE fairly stupid when Morons catch and release coon you just have to use a differant style trap to re capture them I do it on a daily basis almost here in tidewater Va