In the wake of the institutional reforms implemented by the central government in 757, students were further segmented into kogyosho (講経生), densho (傅生), isho, harisho (students of acupuncture), tenmon no sho (students of astronomy), onmyo no sho (students of onmyo), and rekisansho (students of mathematics).
757年には中央の制度改革に伴って学生が細分化されて講経生・傅生・医生・針生・天文生・陰陽生・暦算生に分かれた。