The document reflects on over 40 years of experience conducting residential field courses in biology, ecology, and environmental studies. It discusses that over 5,000 students have participated in over 140 residential field courses totaling around 200 weeks, focusing on developing students' ecological knowledge, field techniques, and other practical and professional skills. Surveys of students show that field courses particularly helped them to improve skills in areas like experimental design, statistics, report writing, communication, and group work.