A girl comes home from boarding school to learn that her father remarried after the death of her mother.there was a song" the worms crawl in, the worms crawl out". Think the movie was in from the 1960's

Maybe you're looking for 'Picture Mommy Dead' - here's a review from IMDB that sounds like what you've described...
Picture Mommy Dead Reviews & Ratings - IMDb

(Don't know why this is in the children's section, try the movie section next time!)

I need to find out the title to a movie around the late 1960's or early 1970's where the group of 5 or 6 people are in search of a treasure.

(Next time you should start your own thread!) Maybe you're looking for this... hilarious movie!
It's a Mad Mad Mad Mad World (1963) - IMDb