Complex sentence: It is sometimes referred to as a "public school" in the English usage of the term as defined by the Public Schools Act 1868, as the school follows certain practices such as usage of the Common Entrance Exam for the 13 + entry age.
Split into simpler sentences: It is sometimes referred to as a "public school" in the English usage of the term as defined by the Public Schools Act 1868. The school follows certain practices such as usage of the Common Entrance Exam for the 13 + entry age.