Annual report pursuant to Section 13 and 15(d)

Revenue (Narrative) (Details)

v3.19.2
Revenue (Narrative) (Details) - USD ($)
12 Months Ended
Apr. 30, 2019
Apr. 30, 2018
Disaggregation of Revenue [Line Items]    
Deferred revenue $ 2,456,865 $ 1,814,136
Refunds due students $ 1,174,501 $ 815,841
Sales Revenue, Net [Member] | Non-US [Member]    
Disaggregation of Revenue [Line Items]    
Percentage of revenues from students outside the United States 1.62% 2.30%