Complex sentence: Its predecessor, the Belvedere School, was founded in 1880 as Liverpool High School, and it is non-denominational, non-feepaying, and one of the 29 schools of the Girls' Day School Trust.
Split into simpler sentences: Its predecessor, the Belvedere School, was founded in 1880 as Liverpool High School. It is non-denominational, non-feepaying, and one of the 29 schools of the Girls' Day School Trust.