I find this system to be easy to use, clean and very attractive. Either one buys a board already finished with a special porcelain finish or one purchases the same finish on a self adhesive backing in roll form. This is sometimes called a "Dry-wipe" finish. The board surface is extremely hard and resistant to the color dyes found in the markers, so that they leave no stain.
The dry-wipe markers are wet when applied but dry to a powder in seconds without losing any of their color. They are available in a number of very bright shades and will work not only on proprietary boards but on glass, mirrors. or even on unpainted metal.Because the markers dry to a powder, an ordinary chalkboard eraser will easily remove them.
The children's worker will find this system a great boon in his or her work especially for memory verses and quizzes. It leaves no dust on the floor like chalkboard and is much brighter and more attractive to use. I mentioned that the dry-wipe system is sometimes combined with a magnetic board.
If you have difficulty forming letters for your magnetic board or other equipment, then you may want to consider a preformed plastic lettering system called "Plasti-graph."