Sharp corners or building walls too near the edge of p ractice area should be avoided. Secondly, there should also be adequate mats and flooring to absorb the impact of falls. Martial arts practice can become quite rough, especially if you are throwing your partner or taking a fall. If the mats are too thin to provide adequate compressio n for tumbling or there are no mats available, you shouldn't attempt high throws or takedowns. Finally, the practice and clothes changing areas should be clean for health reasons.
Any wet areas are breeding grounds for fungus and germs.
Make sure these areas are cleaned periodically and a suitable disinfectant is used on all practice areas. This is especially important if practice is conducted in bare feet. In this case, shoes or slippers should be worn at all times when leaving or entering the designated practice area. Other items to check include the school's affiliations with recognized martial arts organizations. You should also ask how many members are in that particular organization.