Document And Entity Information	3 Months Ended
	Jul. 31, 2014	Aug. 31, 2014
Document Information [Line Items]
Entity Registrant Name	CHAMPIONS ONCOLOGY, INC.
Entity Central Index Key	0000771856
Current Fiscal Year End Date	--04-30
Entity Filer Category	Smaller Reporting Company
Trading Symbol	CSBR
Entity Common Stock, Shares Outstanding		66,885,741
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jul. 31, 2014
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2015