disciplinary (adj.)

• autodidactic
• coeducational
• corrective
• cultural
• didactic
• edifying
• educational
• educative
• enlightening
• exhortatory
• grueling
• homiletic
• hortatory
• illuminating
• informative
• initiatory
• instructive
• introductory
• penal
• propaedeutic
• punishing
• punitive
• punitory
• retributive
• scholarly
• scientific
• technical
• technological