Significant Accounting Policies - Schedule of Property and Equipment Useful Lives (Details)	12 Months Ended
	Apr. 30, 2020
Computer equipment & hardware
Property, Plant and Equipment [Line Items]
Useful Life	3 years
Software
Property, Plant and Equipment [Line Items]
Useful Life	5 years
Instructional equipment
Property, Plant and Equipment [Line Items]
Useful Life	5 years
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Useful Life	7 years
Leasehold improvements | Maximum
Property, Plant and Equipment [Line Items]
Useful Life	8 years