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Isocrates was an influential teacher, perhaps the most so in the ancient history of rhetoric. His students included many notable citizen statesmen and decorated leaders. Isocrates' school had entrance requirements (few others did in those days--other than the requisite tuition).
Isocrates stressed the use of models in education. He promoted both the progymnasium (analysis, practice, and delivery of set speeches drawn from history and/or the master) and declamatio (debate). He sent his students to the courts and the legislature to observe the best speakers.