The community's namesake is Bartolomé de las Casas (1484-1566), a Spanish missionary on Christopher Columbus's third expedition who was known as the "Apostle of the Indians" in recognition of his efforts to protect the native population from slavery and abuse.
Lascassas is the site of a public elementary school operated by the Rutherford County school district and enrolling students from pre-kindergarten through grade 5. Current enrollment is about 855 students. 
The American actor John M. Pickard was born in Lascassas and died in Rutherford County.
- U.S. Geological Survey Geographic Names Information System: Lascassas, Tennessee
- Facts about Lascassas, Lascassas School website, accessed April 19, 2008.
- A Glimpse at the History of Lascassas School, Lascassas School website, accessed April 19, 2008.
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