High Quality Content by WIKIPEDIA articles! Walnut Grove Secondary School (WGSS) is located in the community of Walnut Grove in Langley, British Columbia. It has an enrollment of almost 2000 students, making it the largest school in Langley and one of the largest schools in the Vancouver region. As of 2009, it was the seventh largest school in the province of British Columbia. The athletic programs, led by their mascot Wally, are among the highest ranking in the province.