IEO conducts accountability and learning-focused evaluations that generate lessons learned for the GEF. The evaluations focus on results, impact and performance of the GEF, and address strategic issues of the partnership.
Overall Performance Studies (OPS) are performed every four years to provide solid evaluative evidence to donors. These evaluations provide an independent assessment of performance and results of the GEF over a GEF replenishment period. The comprehensive evaluations assess the extent to which the GEF is achieving its objectives and identify potential areas of improvement.
Costa Rica was the site of the pilot CPE. The country was selected because of its broad GEF portfolio, the types of GEF support, the engagement of implementing and executing agencies and the country's long experience with environmental issues. The success of this pilot evaluation convinced the GEF to continue conducting CPEs in other countries.