School Blackboard Clipart   Image 9 of 20 Free Clipart of School Blackboard Clipart of a teacher pointing to a blank green chalkboard used in her classroom for instruction Full image dimensions ~ 230 x 170 pixels File size ~ 15 KB Related Keywords ~ classroom   education   green chalkboard   instruction   pointer   school   slateboard   teacher                         This Public Domain image is available for personal and commercial projects. School Blackboard Clipart   Image 9 of 20 Some of this Month's Most Viewed Education Clipart ...