Massachusetts is home to some of the best universities in the country: from Harvard to Boston University to MIT to the University of Massachusetts. But the Bay State also has some stellar elementary schools.

Pittsburgh-based Niche.com Inc. ranks the best public elementary schools in the U.S., and not surprisingly, five Massachusetts elementary schools made the top 100 in the U.S. However, it may be surprising to many that three of those are in Lexington: the Joseph Estabrook Elementary School (81),…