A 10-year profile is provided of Middle College High School (MCHS), an alternative high school operating under the joint auspices of the New York City Board of Education and LaGuardia Community College. The first sections of the report look at the history and goals of MCHS, explaining that the school was created to reduce the dropout rate among high risk high school students, to improve students' self-concept, and to enhance college and career options by helping students reach their full potential. The next sections focus on MCHS's instructional programs, student characteristics, and the admissions process which admits students from junior high school or high school. Rates of retention and absenteeism of MCHS students are contrasted with those of students from other alternative schools and public high schools, and MCHS's career education component, which features trimester-long non-paying internships once a year, is described. Next, the report describes policies regarding college credit, outlines placement procedures and the positive features of the program, provides comparisons of the competency test scores of MCHS students and those of other alternative school and public school students, offers a profile of MCHS faculty, describes the financial base for the program, and lists articulation benefits. The final sections present research data on the progress of the Class of 1984 from its admission in 1981, 5-year statistics on graduation rates, percent of students accepted by postsecondary institutions and Regents Scholarships awarded, and student responses to a 1985 folow-up survey. (EJV)