Weird three-part movie series in late 80's/early 90's warning against drug use.

[Samantha2587]

When I was in 2nd and 3rd grade our guidance counselor showed us this series of movies about drugs. They were kind of scary. A high school kid ends up in a strange dimension where he has to overcome challenges to win the battles against drugs and alcohol. He gets "special" sunglasses to see the truth about drugs in one movie and he gets a colorful bandana in another. The "bad guys" are people literally named "Booze" and "Heroin". There's even a freaky scene where the kid has to avoid a pit of snakes.

[Rayo Casablanca]

It's a series called STRAIGHT UP (1988)
http://en.wikipedia.org/wiki/Straight_Up_(film)