Original sentence: , has founded two other schools in Birmingham since starting the Clayton College of Natural Health.Chadwick has been called a diploma mill.In 1988 he started the American Institute of Computer Science, which is now American Sentinel University.In 1989 he started Chadwick University in Birmingham
Edited sentence: , has founded two other schools, both in Birmingham, since starting the Clayton College of Natural Health.In 1988 he established the American Institute of Computer Science, which is now American Sentinel University.In 1989 he started Chadwick University, which has been called a diploma mill