ÌÒÖ­Ó°Ôº

Quarterly report pursuant to Section 13 or 15(d)

Significant Accounting Policies (Narrative) (Details)

v3.6.0.2
Significant Accounting Policies (Narrative) (Details) - USD ($)
 6 Months Ended
Oct. 31, 2016
Oct. 31, 2015
Apr. 30, 2016
Cash and Cash Equivalents [Line Items]      
Amount of cash balance uninsured by FDIC $ 250,000    
Employee Stock Option [Member]      
Cash and Cash Equivalents [Line Items]      
Antidilutive securities 22,197,979 16,857,313  
Warrant [Member]      
Cash and Cash Equivalents [Line Items]      
Antidilutive securities 11,214,659 28,871,757  
Convertible Debt [Member]      
Cash and Cash Equivalents [Line Items]      
Antidilutive securities 907,143 1,207,143  
Convertible debt $ 350,000 $ 650,000  
Two Separate Institutions [Member]      
Cash and Cash Equivalents [Line Items]      
Amount of cash balance uninsured by FDIC $ 426,487   $ 1,224,863
Sales Revenue, Net [Member] | Non-US [Member]      
Cash and Cash Equivalents [Line Items]      
Percentage of revenues from students outside the United States 3.50%