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Schedule of net sales revenue (Details) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Tuition fees [1] R$ 2,124,589 R$ 1,388,735 R$ 856,561
Other 167,441 99,817 43,116
Deductions      
  Granted discounts (229,254) (89,017) (43,767)
  Early payment discounts (49,879) (29,299) (8,523)
  Returns (42,373) (11,437) (7,462)
  Taxes (74,232) (49,629) (28,157)
  PROUNI (176,921) (107,979) (61,138)
Net revenue from contracts with customers 1,719,371 1,201,191 750,630
Tuition, digital content and app subscription fees - Transferred over time 1,640,889 1,128,558 713,827
Other - Transferred at a point in time R$ 78,482 R$ 72,633 R$ 36,803
[1] As mentioned in Note 1, the Company assessed, in connection with the social distancing requirements, whether it has satisfied all performance obligations of its contracts with customers, according to IFRS15, and concluded it was necessary to defer a portion of its net revenues in the second semester of 2020. As result, R$2,361 of net revenue were deferred to the first semester of 2021 and recorded in advances from customers.