The Delaware County Intermediate Unit has certified itinerant Englsih Language Development teachers who instruct English Learners in the following districts and schools.

1. Chichester School District
2. Garnet Valley School District
3. Haverford School District
4. Interboro School District
5. Penn-Delco School District
6. Southeast Delco School District
7. Wallingford-Swarthmore School District
8. Visions Academy Charter School
9. Widener Partnership Academy Charter School
10. Chester Charter School for the Arts