Original sentence: Since the completion of the Phelps Science Center in 2001, all classes can be conducted around the same oval tables.The classes of 2005-2007 most frequently enrolled at the following colleges: Dartmouth, Georgetown, Harvard, Penn, Princeton, Stanford, Tufts, and Yale.The result was Harkness Teaching method
Edited sentence: Elements of the Harkness method can now be found at academic institutions across the globe, and Phillips Exeter Academy  offers 450 courses in 19 subject areas, the student to teacher ratio is 5:1, and a substantial majority of the faculty have advanced degrees in their fields.For example, the classes of 2005-2007 most frequently enrolled at the following colleges: Dartmouth, Georgetown, Harvard, Penn, Princeton, Stanford, Tufts, and Yale.Instead, these emerge from students' complementary approaches to the assigned problems.Students are not given theorems, model problems, or principles beforehand.The completion of the Phelps Science Center in 2001 meant that all science classes, previously the only ones taught in a more conventional layout, could also be conducted around the same oval tables.The result was Harkness Teaching in which a teacher and a group of students work together, exchanging ideas and information, similar to the Aristotelian method of antiquity.The success of an Exeter education is proven by Exeter's large body of students matriculating to top universities.These Harkness classes feature heavily in both the school's identity and its day-to-day life