Complex sentence: The Texas Junior Classical League (TSJCL) is a branch of the National Junior Classical League (NJCL), an organization dedicated to the study of Classics, namely Latin and Greek.
Split into simpler sentences: The Texas Junior Classical League is a branch of the National Junior Classical League. Texas State Junior Classical League, or TSJCL, is a branch of the National Junior Classical League (NJCL), an organization dedicated to the study of Classics, namely Latin and Greek.