Quarterly report pursuant to Section 13 or 15(d)

Revenue (Details)

v3.19.3.a.u2
Revenue (Details) - USD ($)
3 Months Ended 6 Months Ended
Oct. 31, 2019
Oct. 31, 2019
Oct. 31, 2018
Apr. 30, 2019
Disaggregation of Revenue [Line Items]        
Deferred revenue $ 5,509,861 $ 5,509,861   $ 2,456,865
Refunds due students 1,902,211 1,902,211   $ 1,174,501
Total revenue earned, deferred revenue $ 2,700,000 $ 2,500,000    
Revenue Benchmark | Non-US        
Disaggregation of Revenue [Line Items]        
Percentage of revenues from students outside the United States   1.32% 1.70%