I always insist that children wash their hands thoroughly after handling any animal as a safety precaution. Lizards I have had less satisfactory experiences with lizards in the classroom. Iguanas are often sold in stores, but are generally not appropriate. It is difficult to keep them thriving. They grow very large, and are quite sensitive to changes in the environment.
Small lizards are very quick and sometimes get loose in the classroom.
They are quite sensitive to over-handling. If you do decide on a lizard, be sure to do your homework. Amphibians Small amphibians can be kept in naturalistically designed terrariums. Most need dry land and a water area. Some aquatic species may need less dry area.