Dry erase on both sides of the board. One side is ruled for practicing penmanship or spelling, and the other side is not ruled allowing students to use it for playing classroom games and other classroom activities. Ruled side: 0.75" ruling, 0.38" dotted midline, 0.25" skip space. Red baseline. Wipe away and do it again! Erases cleanly. Class pack includes 30 boards. Boards measure 11" x 8.5". Recyclable.