Sarah Ann Stashefski, of Lansdale, and Ryan Eric Boyle, of Allentown, along with their parents, have announced their engagement.

The bride-to-be is the daughter of Conrad and Bernadette Stashefski of Lansdale. She is a 2001 graduate of Lansdale Catholic High School and a 2005 graduate of De Sales University, where she earned a bachelor's degree in elementary and special education.She is currently employed as a first-grade teacher at Our Lady of the Angels Academy in Lansford.The prospective bridegroom is the son of Charles and Denise Boyle of Summit Hill. He is a 2000 graduate of Marian Catholic High School and a 2004 graduate of De Sales. At De Sales, he earned two bachelor's degrees, one in biology and the other in environmental science.Currently, he is employed as a chemist at Ungerer & Co. in Bethlehem.The couple will exchange vows June 18, 2011.