Complex sentence: Oklahoma has some schools that use the field, while most use the 80-yard field, other states, such as Colorado, North Carolina, South Carolina and Idaho, keep the field of play at 100 yards long while reducing the width to 40 yards.
Split into simpler sentences: Oklahoma has some schools that use the field, while most use the 80-yard field. Other states, such as Colorado, North Carolina, South Carolina and Idaho, keep the field of play at 100 yards long while reducing the width to 40 yards.