classroom wallpaperProviderpixabayResolution2889 × 2063Aspect ratio1.40:1AuthorWOKANDAPIXSourceOpen original page Download wallpaper Available sizesPreview150 × 107Web640 × 457Large2889 × 2063Tagsclassroomlecture hallcollegeeducationuniversityschoolbrown schoolbrown educationbrown classroom