The Medford School Committee is looking into ways it can revamp the city’s vocational program, including a review of programs in nearby communities, Superintendent Roy Belson said. Medford Vocational Technical High School has been the subject of several committee meetings since the start of the year, most recently on April 24, when it met with representatives from vocational programs in Somerville and Cambridge, Belson said. New programs in robotics, environmental sciences, and biotechnology are among the changes being considered, he said. The vocational school has seen its enrollment fall from about 260 a decade ago to 220 today, Belson said. Any significant changes would likely be implemented for the 2014-2015 school year.