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Quarterly report pursuant to Section 13 or 15(d)

Revenue - Narrative (Details)

v3.22.2.2
Revenue - Narrative (Details) - USD ($)
3 Months Ended
Jul. 31, 2022
Jul. 31, 2021
Apr. 30, 2022
Disaggregation of Revenue [Line Items] Ìý Ìý Ìý
Deferred revenue $ 6,245,530 Ìý $ 5,889,911
Recognition of deferred revenue $ 4,634,974 Ìý Ìý
Revenue Benchmark | Non-US | Customer Concentration Risk Ìý Ìý Ìý
Disaggregation of Revenue [Line Items] Ìý Ìý Ìý
Percentage of revenues from students outside the United States 2.00% 1.00% Ìý