Choy, Alt, and Henke (1994) discuss the difficulties in designing work-based learning experiences that are appropriate for all students:
Despite the need to serve all students, these programs serve different purposes for different types of students, and no one program will meet the needs of all students. For example, students bound for four-year colleges need an overall understanding of the world of work and the academic background required for various occupations. Although these students would profit from an opportunity to work in a field related to their interests to help them choose a career, most students would not have to learn specific job skills in high school. Students who plan to work immediately after high school, on the other hand, need not only an opportunity to explore possible careers but also a chance to start learning general work and job-specific skills while still in high school. Students who plan to have some postsecondary education but to attain less than a bachelor's degree need less occupationally specific training than students going immediately to work, but they need a carefully articulated program that links their educational experiences in high school with a specific postsecondary program.
Also, educators and policymakers will have to set priorities about who will be served because developing and implementing appropriate opportunities for all students will be a long, difficult process. Thus the more we know about subgroups of students, the easier it will be to design programs and target those in most need first." (p. 97)
Source: Profile of the Target Population for School-to-Work Transition Initiatives, by S. Choy, M. Alt, and R. Henke (p. 97-130) in School-to-Work: What Does Research Say About It? 1994, Washington, DC: U.S. Department of Education.