Complex sentence: The Pennsylvania Cyber Charter School, known familiarly as PA Cyber, is a public cyber charter school founded in Midland, Pennsylvania in 2000, and enrollment in it is open to all Pennsylvania students in grades kindergarten through 12th grade throughout the commonwealth.
Split into simpler sentences: The Pennsylvania Cyber Charter School, "also known as PA Cyber," is a public, cyber charter school founded in Midland, Pennsylvania in 2000. Enrollment is open to all Pennsylvania students in grades kindergarten through 12th grade throughout the commonwealth.