Priore, R.J. and Shaya, O.A. 2026. Aligning leader development and organizational performance improvement: An international case study application of kirkpatrick’s four -level assessment model . International Journal of Social Sciences Perspectives. 17, 1 (Mar. 2026), 1–11. DOI:https://doi.org/10.33094/ijssp.v17i1.2420.