Complex sentence: Boston Trinity Academy (BTA) is a private Christian school in Hyde Park, Boston, MA, USA, that currently enrolls roughly 220 students (as of 2009-10 school year) in grades 6-12.
Split into simpler sentences: Boston Trinity Academy (BTA) is a private Christian school in Hyde Park, Boston, Massachusetts, United States. It currently enrolls roughly 220 students (as of 2009-10 school year) in grades 6-12.