Schenectady High School has a mixed reputation in terms of safety. There is, however, a wide variety of highly-rated opportunities available - the International Baccalaureate program is outstanding (and not available at Niskayuna). The fine arts and dance department have nationally recognized programs. Check out the district website at http://www.schenectady.k12.ny.us
Since you are local, call the district office and ask to speak with the Parent Liason for specific information and to set up a tour. Good luck!