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Annual report pursuant to Section 13 and 15(d)

Significant Accounting Policies (Narrative) (Details)

v3.10.0.1
Significant Accounting Policies (Narrative) (Details) - USD ($)
 12 Months Ended
Apr. 30, 2018
Apr. 30, 2017
Cash and Cash Equivalents [Line Items]    
Cash, FDIC insured amount $ 250,000  
Courseware, expected useful life 5 years  
Amount of cash balance uninsured by FDIC $ 14,422,499  
Marketing and promotional costs 5,428,828 $ 2,625,075
Long term accounts receivable 1,315,050 $ 657,542
Restricted cash 118,872  
Letter of credit issued by bank $ 71,634  
Sales Revenue, Net [Member] | Non-US [Member]    
Cash and Cash Equivalents [Line Items]    
Percentage of revenues from students outside the United States 2.30% 3.30%
Two Separate Institutions [Member]    
Cash and Cash Equivalents [Line Items]    
Amount of cash balance uninsured by FDIC $ 14,422,499 $ 2,687,461
Employee Stock Option [Member]    
Cash and Cash Equivalents [Line Items]    
Antidilutive securities 2,933,426 2,097,384
Warrant [Member]    
Cash and Cash Equivalents [Line Items]    
Antidilutive securities 650,847 914,123
Convertible Debt [Member]    
Cash and Cash Equivalents [Line Items]    
Antidilutive securities 4,167 4,167
Convertible debt $ 50,000 $ 50,000