This dissertation investigates aspects of diversity, equity, and inclusion, adaptive management, and evaluation in environmental education (EE), and is composed of and introduction, three stand-alone manuscripts (Chapters 2-4), and a conclusion. The introduction gives a brief overview of EE and explains why the topics of study included in this dissertation are important to address. In Chapter 2, we used pre-experience student surveys to understand how preparation, adult support, and students' racial identities influence student attendance to a residential environmental education program. Chapter 3 identifies areas and approaches for improving evaluation processes in EE and practitioner satisfaction with those processes. We collected these data using an online survey promoted on social media and emailed to EE practitioners involved in the North American Association for Environmental Education and the Association of Nature Center Administrators. Chapter 4 outlines a culturally responsive evaluation framework for use in EE. The results of these studies show there is far more to be done in the field of EE to create a welcoming and inclusive space for all audiences, to promote the use of evaluation as a tool for continuous learning and improvement, and to ensure evaluations are valid for and reflective of the culture of program participants. The conclusion discusses the two prevalent themes embedded in these manuscripts, namely diversity, equity and inclusion, and evaluation in EE, and ends with a reflection on my time here as a Ph.D. student and where I see my career path heading. This dissertation is meant to provide ideas and suggestions to environmental education practitioners that they can implement in hopes of improving EE and evaluation to meet the needs of all audiences and to address global environmental challenges.