In the research combining the MCDA method and public participatory approach, an application that collects public opinion is needed. The input from respondents often does not meet the expected standards; example, the consistency ratio of the AHP pairwise judgment. This paper is a part of the primary research with title A GIS-based Multi-Criteria Decision Analysis and Public Participatory Approach for Public Schools Site Selection, and it focused on the AHP pairwise judgment phase. This phase needs to be reconducted because the first pairwise judgment survey application got a poor consistency ratio. The second application implemented a new approach called directed pairwise judgment. This approach has successfully raised the consistency ratio significantly and also reduces the consuming time of the pairwise comparison phase.

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