Willy Wonka is one of the great underrated films. I never understand why people get so worked up about the tunnel scene. It's incredibly brief, and beyond that the movie's amazing. The first act drags a little, but the film quickly picks up when act 2 starts. Here's what I think:
Educational Content: The only thing educational here is the fact that kids may want to read the book that inspired this.
Positive Messages: the good guys are justly rewarded, the bad guys are justly punished, some other messages include the importance of faith, the need for honesty, the crazyness of competition, the sins of gluttony, greed, gum chewing, and constant TV watching, as well as appearances being deceiving. A majority of the lessons to be learned come directly from the Oompa-Loompas via a song
Positive Role Models: Charlie is an awesome role model and loves his family, his life, and even his low-paying job delivering newspapers. His family, especially his spunky Grandpa Joe, are equally good role models. Willy Wonka may act like a freak, but a good side of him is revealed in him. The four contestants and their parents, however, are less than positive influences.One in particular is so greedy that upon her arrival in the factory, she demands anything she sees, which eventually causes her downfall(more on that later). One of Wonka's chief rivals tempts the contestants, but turns out to be something unexpected.
Violence: A scene that's a deal-breaker for many parents is the imfamous tunnel scene. However, the 2nd act features several dark scenes throughout. Contestants are sucked through a pipe, transformed into a blueberry, fall into a garbage chute connected to a furnace, and are shrunk via television. One character resorts to violence to try and get her way. The tunnel scene is brief, but does contain scary images that kids over 7 can probably handle.
Sexual Content: Not an issue
Language: None, unless a brief use of "Bull!" counts
Consumerism: One scene takes place in a room full of sweets, but no product names, beyond Wonka's, are shown.
Alcohol: Wonka mixes some sort of drink in a brief scene, and mentions to someone "Candy is dandy, but liquor is quicker"
The best advice I can give to a family is just to keep your kids away from the tunnel scene until they're ready to handle it. Just please don't let it ruin what will otherwise be an enjoyable classic that generations have grown to love.