Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

SEGMENT REPORTING - Revenue and Non current assets by geographic location (Details)

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SEGMENT REPORTING - Revenue and Non current assets by geographic location (Details) - USD ($)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Disclosure of geographical areas [line items]    
Revenue $ 12,778,262 $ 7,633,776
Non-current assets 11,099,245 12,021,110
Europe / Middle East / Africa    
Disclosure of geographical areas [line items]    
Revenue 5,185,588 3,078,736
Non-current assets 8,477,393 504,655
Asia / Pacific    
Disclosure of geographical areas [line items]    
Revenue 4,894,073 2,959,709
Non-current assets 2,120,102 11,000,159
North America / South America    
Disclosure of geographical areas [line items]    
Revenue 2,698,601 1,595,331
Non-current assets 501,750 516,296
Education    
Disclosure of geographical areas [line items]    
Revenue 9,676,052 5,618,210
Non-current assets 502,352 1,016,870
Education | Europe / Middle East / Africa    
Disclosure of geographical areas [line items]    
Revenue 3,630,760 2,068,037
Non-current assets 602 802
Education | Asia / Pacific    
Disclosure of geographical areas [line items]    
Revenue 3,346,691 1,954,842
Non-current assets   499,772
Education | North America / South America    
Disclosure of geographical areas [line items]    
Revenue 2,698,601 1,595,331
Non-current assets 501,750 516,296
Campus    
Disclosure of geographical areas [line items]    
Revenue 3,102,210 2,015,566
Non-current assets 10,596,893 11,004,240
Campus | Europe / Middle East / Africa    
Disclosure of geographical areas [line items]    
Revenue 1,554,828 1,010,699
Non-current assets 8,476,791 503,853
Campus | Asia / Pacific    
Disclosure of geographical areas [line items]    
Revenue 1,547,382 1,004,867
Non-current assets $ 2,120,102 $ 10,500,388