Quarterly report pursuant to Section 13 or 15(d)

Revenue - Narrative (Details)

v3.22.2.2
Revenue - Narrative (Details) - USD ($)
3 Months Ended 6 Months Ended
Oct. 31, 2022
Oct. 31, 2021
Oct. 31, 2022
Oct. 31, 2021
Apr. 30, 2022
Disaggregation of Revenue [Line Items]          
Deferred revenue $ 8,772,017   $ 8,772,017   $ 5,889,911
Recognition of deferred revenue     $ 5,055,024    
Revenue Benchmark | Customer Concentration Risk | Pre-Licensure Nursing Program          
Disaggregation of Revenue [Line Items]          
Revenue (as percent) 20.00% 21.00% 22.00% 22.00%  
Revenue Benchmark | Customer Concentration Risk | Non-US          
Disaggregation of Revenue [Line Items]          
Revenue (as percent) 2.00% 2.00% 2.00% 2.00%