As has been pointed out by other users, this is clearly not a horror film. Perhaps a highschool-exploitation-revenge flick but without splatter or gore and there are certainly no massacres. The DVD-cover (at least the one I own, Dark Vision - 2001, different from the German cover shown here) even shows a guy holding an Axe, who is not in the movie at all, as there are no axes in the film for that matter either!
When I first heard about this film, I was fascinated, mainly because of the name of the director, Rene Daalder. I was a bit puzzled, because there's only a handful of Dutch directors active in the U.S, so who was this Daalder? Perhaps just a Dutch name, as there are many in the U.S., but apparently he did come from the Netherlands and came to America around 1970 after making several films in the Netherlands. One of them, DE BLANKE SLAVIN (The White Slave) (1969), made on a budget of 1,100,000 Guilders (at least $500,000), actually was the most expensive Dutch movie made at the time. Trivia note about this, he co-wrote the script with the now (world) famous architect Dutch Rem Koolhaas! I don't have the exact figures (not even available anymore) but something like 845 people went to see it and as a result he wisely decided to leave the country for a while and went to America.
After first seeing the film some five months ago, I thought it was OK, but nothing special, but barely a month later, a documentary was shown on Dutch public television, titled HERE IS ALWAYS SOMEWHERE ELSE, made - to my knowledge - by the completely vanished (from Holland at least) Rene Daalder! It's a portrait of the late Bas Jan Ader, fellow Dutch artist in exile, living and working in Los Angeles in the '60s and early '70s. A interesting portrait of a forgotten artist but to my surprise most of the documentary was about Daalder's own work, part of it about the making of MASSACRE AT CENTRAL HIGH.
In this documentary Daalder pointed out, that every poor teenager losing it's life in this film, is killed by the forces of gravity. The first time I saw the film I didn't really notice this, but indeed, everybody is killed in this way (falling of a cliff, jumping in an empty pool, the crashing of a hang-glider etc.). Even more bizarre is the fact that Bas Jan Ader, whose work this particular documentary dealt with, also had gravity as the main theme in his work. There is some earlier, very strange, footage of him (shot in Holland), falling of a roof or driving his himself with his bicycle in the water, all of it perhaps even filmed by Renee Daalder himself. The resulting material on film itself was apparently considered the end-product, the actual work of "Art".
Somehow Renee Daalder incorporated some of these concepts about gravity in MASSACRE AT CENTRAL HIGH, but besides this peculiar little fact, I can only mildly recommend the film itself. During the whole film, there is a strange, somewhat menacing, atmosphere. But somehow this movie continued to haunt me, not because it's such a good film. Daalder probably had a lot of good ideas and is obviously a better writer than a director, but most of the dialog is poor and with some exceptions, the acting is amateurish. Perhaps some messages about authority, social class and status, but I wouldn't take these to seriously.
Perhaps this film turns out to be more a work of experimental art than a real movie, but it's cult status seems to be firmly established by now. 7/10 for pure strangeness and sheer curiosity value.