Zborovska street. There was a high school in Zborovska street called Zborovska high school specialized in math and science. It was well known in Prague, their students won a lot of prizes and a lot of my class mates went there after elementary school. They got a new name few years ago and I don't think they are doing as well as they were used to now.
By the way, Czech name for "high school" is "gymnasium" which, of course, means something different in English. Please, be kind if we use it wrong :)