The Westwood Public Schools will launch a computing initiative at the high school next September by providing all students with a free Google Chromebook. The move comes after a pilot program in 2011-2012 in four classrooms and after a task force of teachers visited four school districts that have implemented a similar arrangment. “What makes Chromebooks a good solution for schools is that they are very user-friendly, both to the students and the teacher,’’ said district technology director Steve Ouellette. The Chromebook is an Internet only, laptop-style device that costs about $249. “I am confident that it is both the best choice educationally and fiscally,” Superintendent of Schools John Antonnucci said.