The top reported proficiency rate is 87% in Science. The lowest is 50% in English language arts.
Original Research by School Decision on Donegal Intermediate School
Donegal Intermediate School serves students in grades three through six in Marietta, a small historic borough on the Susquehanna River in western Lancaster County. The school itself sits on River Road outside the borough's compact downtown, part of a district whose other buildings cluster in nearby Mount Joy. It is a regular public school with no charter or magnet designation.
The school enrolls students from a community with real economic diversity. About half the students qualify for free or reduced-price lunch, and the student body reflects the county's demographics: most students are white, with a meaningful Hispanic population and smaller numbers of Asian and Black students. The enrollment across the four grades is relatively balanced, with modest variation by grade level.
On state testing, Donegal Intermediate shows mixed results. In mathematics and English language arts, the proficiency rates both sit just above the midpoint. Science proficiency is notably stronger. Compared against other districts in Lancaster County, the school's overall proficiency index ranks in the top quartile, a meaningful strength. The school tests a substantial share of its population in each subject, and the data reflects current-year results for ELA and math.
Marietta itself is experiencing residential growth for the first time in decades. The largest project is Riverside Foundry, a major apartment and townhome development on a former industrial site that will substantially increase the borough's population. This growth is tied to the area's appeal to commuters to Lancaster, York, Harrisburg and Hershey, and to heritage and outdoor tourism anchored by the Susquehanna riverfront and the Northwest River Trail. Housing values in the 17547 zip code are in the mid-range for the region and have risen modestly year over year. Rents are lower than mortgage costs for comparable housing, and the affordability ratio sits slightly above the national median, making the area modestly more affordable than the country as a whole.
The Donegal School District, which covers Marietta, Mount Joy, East Donegal Township and part of Mount Joy Township, is undergoing significant capital expansion. In June 2025 the school board approved Phase 1 of a comprehensive facilities plan that includes renovating the primary school, building a new district office, adding athletic facilities and a field house. The district has existing bond debt and is borrowing to fund the work. For 2025-26 the board approved a property tax increase, with expenditures projected to exceed revenue by a substantial margin, signaling that upward tax pressure will likely continue. The district also launched Donegal Virtual Academy, a district-run full-time online K-12 program where students keep their Donegal enrollment, diploma eligibility and access to extracurriculars and athletics, offering families a permanent in-district alternative to cyber charters.
What is not available in the data: information about class sizes, teacher experience or turnover, special education and English learner enrollment counts, school discipline records, course-level offerings at the intermediate grade band, or detailed staffing. Graduation rates do not apply to an intermediate school. Chronic absenteeism data was not reported. The data shows this school's academic position within its county but offers limited insight into school climate, classroom practice, the student support infrastructure, or how the school manages the transition from elementary to upper grades.
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