Did the Children in Delaware Colony have to go School?

No, there wasn't a mandatory schooling system in the Delaware Colony (or any of the thirteen colonies) during its existence. Education was largely the responsibility of families and depended heavily on social class and religion. Wealthier families might hire tutors or send their children to private schools, while poorer families often relied on informal education within the home or apprenticeships. There were some church-sponsored schools, but these were not universally available.