READING, Pa. (AP) — Kindergartners and first-graders have started the year doubled up in single classes in an eastern Pennsylvania district, where a building project has been delayed by red tape.

There have reportedly been 48 kindergartners in one classroom, and roughly 50 first-graders and two teachers in another at the 10th and Green Elementary School in Reading.

Reading School District Superintendent Khalid Mumin says unanticipated enrollment and delays in getting city approvals for a modular expansion to the school have caused the crowding.

Until the modular additions can be built. Mumin says other areas of the building will be reconfigured to make enough room for two classrooms in each grade.

City officials say the planning approvals were delayed because the size of the expansion was larger than officials were originally led to believe.