Final answer:
True, Calvinist theology, influenced by John Calvin, supports the idea that an educated and diligent life is indicative of God's grace, which aligns with Puritans' emphasis on socially virtuous lives and education for children.
Step-by-step explanation:
True or False, John Calvin said that a believer needed to be educated to contribute to society and do well in everyday tasks as a sign of grace from God for their salvation. This statement is true. Calvin's teachings, especially within Calvinist theology, emphasized that education was imperative, as it was believed that good works, including societal contributions and personal diligence, were reflections of salvation, not means to earn it. An educated and disciplined life was seen as indicative of one's election by God. This is corroborated with historical accounts that Puritans, who followed Calvinist teachings, sought to live socially virtuous lives, including ensuring the education of children, in the pursuit of living in accordance with God's will.