Funders are increasingly making strategic investments across multiple grantees, aiming for their portfolio to improve targeted outcomes in a specific issue area. To this end, funders might use multi-site evaluation (MSE) approaches to examine the impact of their collective investments. However, it is important to recognize that each program—and its own program evaluation—must be tailored to its setting, population, and local context to best meet the needs of its target population. Therefore, multi-site evaluations need to account for this complexity. This paper describes the Sí Texas project, a large initiative of eight grantees implementing different integrated behavioral health models to improve physical and mental health outcomes along the Texas-Mexico border. With over 4,200 MSE study participants, the evaluation for Sí Texas used a partnership-centered approach to both enhance the evidence base and build local organizational capacity. This paper describes this approach, the process of tailoring evaluation practices to the grantees’ context, and the challenge of balancing consistency at the grantee-level for the portfolio multi-site evaluation. Successes, challenges, and lessons learned related to study design, data collection, grantee partnership, and capacity building are discussed.

资助者越来越多地对多个受助者进行战略投资，旨在使他们的投资组合改善特定问题领域的目标成果。为此，资助者可能会使用多站点评估 (MSE) 方法来检查其集体投资的影响。然而，重要的是要认识到每个项目及其自身的项目评估都必须根据其环境、人口和当地情况进行调整，以最好地满足其目标人群的需求。因此，多站点评估需要考虑到这种复杂性。本文介绍了 Sí Texas 项目，这是一项由 8 位受助者组成的大型计划，该计划实施不同的综合行为健康模型，以改善德克萨斯 - 墨西哥边境沿线的身心健康状况。拥有超过 4,200 名 MSE 研究参与者，对 Sí Texas 的评估使用了以合作伙伴为中心的方法，以增强证据基础并建立当地组织能力。本文描述了这种方法、根据受助人的背景定制评估实践的过程，以及在受助人级别平衡多站点评估的一致性的挑战。讨论了与研究设计、数据收集、受助者伙伴关系和能力建设相关的成功、挑战和经验教训。