ROYERSFORD — A pair of Evans Elementary School teachers earned a national designation after completing a series of projects over several months.

Susan Mercer, a second-grade teacher, and Arlene Reagan, a third-grade teacher, recently achieved National Board for Professional Teaching Standards certification, according to a release from the Spring-Ford Area School District.

Among the projects, the release said, were four portfolio pieces and six response exercises “that were designed to test (their) instructional abilities and aptitude.”