This report reviews and evaluates a selection of the most Ljubljana Guidelines (LG)-pertinent indexes on integration currently existing across the OSCE member states. The findings of this review aim to inform the HCNM in its endeavours to engage participating States in operationalizing the LG in their own policy-making and evaluation. The report does not seek to establish new indicators for the implementation of the LG but rather to highlight strengths and weaknesses of the reviewed indicators for the LG. It does so keeping in mind that the work carried out by the HCNM on integration has been part of an overarching strategy for the sustainable prevention of conflicts and the consolidation of diverse societies.