Transferring credits can sometimes be a problem, as each four-year college has its own requirements for enrollment. However, many four-year colleges (usually near the community college) have made arrangements, known as articulation agreements, allowing associate degrees to qualify for transfer, some cases allowing the student to complete the bachelor's degree via distance learning from the community college campus. Some states have passed rules whereby certain associate's degrees in a field will automatically transfer to state universities as the core curriculum for specified bachelor's degrees. Minnesota and Oregon have created a statewide "transfer curriculum" allowing credits to be transferred to any other public university and almost all of the private colleges. The North Carolina system has a similar agreement, whereby specific courses are designated for mandatory transfer credit to all statewide public four-year institutions. Illinois's I-transfer program program aids students in transferring credits across the state. California has a system known as Assist,[12] which labels course equivalencies between all California Community Colleges and California public four-year colleges. In Arizona, the completion of the Arizona General Education Curriculum, or AGEC, at any Arizona community college guarantees residents of Arizona admission to any public university in the state of Arizona.