Constructing the learning outcomes and designing the optimal learning environment are valuable practices in teaching and learning endeavors. Doing so for intercultural learning requires a deft balance of learner inputs and instructional acumen. Assessment of intercultural competence is an essential component since it offers learners and instructors insights on where students are, where they wish to grow, and the success of treatment outcomes. In this study of practice, we examine three years of pre-post mixed-method intercultural assessment data, along with teaching and learning practices and outcomes, to gain insights into how this work of instructional design for intercultural competence can succeed. We also provide suggestions for improvements. The learners were 203 MBA students from the U.S. Pacific Northwest who were enrolled in either a short-term study abroad program or a "glocal" learning experience course. Learners were assessed using the Intercultural Effectiveness Scale (IES) and the AAC&U VALUE Rubric on Intercultural Knowledge and Competency (IKAC). Results support the criticality of intentional instructional course design based on intercultural assessment data for improved intercultural competency development.