Results indicated very high inter-rater reliability for the total form score, as well as for the subdivisions and for each question separately. These results reflect the similar way that the raters evaluated the playgrounds. This is very important for a form like that, because it can be used by different people who are going to assess playgrounds throughout a country. This will decrease significantly the time of conducting a full range study, since it is not necessary for a single researcher to make all assessments. The reliability is not in terms of 100% coincidence of the assessments by the different raters because some questions can probably be answered subjectively. This may suggest the use of special instruments to measure gaps or surfacing materials (CPSC, 2008) or more detailed directions and terminology (e.g. “what is missing part”).