Should single-sex colleges turn coeducational? During the years of controversy over this issue, all-male Haverford College and neighboring all-female Bryn Mawr outside Philadelphia seemed to have worked out an admirable solution: a flourishing exchange program. In what Bryn Mawr billed as the "best of both worlds," the program offered a choice between traditional single-sex education and enrollment in any course at the other college. Up to 150 women and an equal number of men could live on the other campus.
But Haverford became restless. President John Coleman, 55, felt that his Quaker school...