Annual report pursuant to Section 13 and 15(d)

Revenue - Narrative (Details)

v3.22.2
Revenue - Narrative (Details) - USD ($)
12 Months Ended
Apr. 30, 2022
Apr. 30, 2021
Disaggregation of Revenue [Line Items]    
Deferred revenue $ 5,889,911 $ 6,825,014
Total revenue earned, deferred revenue $ 5,087,417  
Revenue Benchmark | Non-US | Customer Concentration Risk    
Disaggregation of Revenue [Line Items]    
Percentage of revenues from students outside the united states (as a percent) 2.00% 1.00%