After replacing the existent classroom furniture measure in each match criterion equation, the established limits and the body dimensions of the students were compared and 3 categories were defined in the case of the two-way equations: ‘‘Match’’ level when the anthropometric measure is between the limits, a ‘‘High mismatch’’ level when the minimum limit of the criterion equation is higher than the anthropometric measure and a ‘‘Low mismatch’’ level when the maximum limit of the criterion equation is lower than the anthropometric measure. For the one-way equations only 2 categories or levels were defined: ‘‘Match’’ and ‘‘Mismatch’’