What's really going on with respect to bias and teaching evals?
Highlighting a 2021 "metastudy of more than 100 articles on...student evaluations," Coleen Flaherty describes how different bias (e.g., gender and race) are real but often difficult to isolate. Knowing the research will help you better understand and contextualize your own evals.
[T]he study finds that factors including an instructor’s gender, race, ethnicity, accent, sexual orientation or disability status affect impact student ratings. Compared to women, male instructors are perceived as more accurate in their teaching, more educated, less sexist, more enthusiastic, competent, organized, easier to understand, prompt in providing feedback, and they are less penalized for being tough graders, according to the study.