Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

INCOME TAXES (Details)

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INCOME TAXES (Details) - CNY (¥)
3 Months Ended 12 Months Ended 15 Months Ended 21 Months Ended 33 Months Ended 36 Months Ended 87 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2015
Mar. 31, 2015
Mar. 31, 2014
Mar. 31, 2013
Mar. 31, 2015
Dec. 31, 2016
Dec. 31, 2017
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2011
Dec. 31, 2010
Mar. 31, 2015
Income Taxes                            
Statutory income tax rate (as a percent)       25.00% 25.00% 25.00%                
Undistributed earnings generated by the PRC consolidated entities     ¥ 133,856,064 ¥ 133,856,064 ¥ 89,611,563   ¥ 133,856,064             ¥ 133,856,064
Unrecognized deferred income tax liability related to undistributed earnings     ¥ 13,385,606 ¥ 13,385,606 8,961,156   ¥ 13,385,606             ¥ 13,385,606
Dividend distribution from PRC subsidiaries to holding company         113,000,000                  
Dividend withholding tax         ¥ 11,300,000                  
PRC                            
Income Taxes                            
Statutory income tax rate (as a percent)       25.00%                   25.00%
Preferential tax rate as a high and new technology enterprise (as a percent)       15.00%                    
Withholding tax rate for dividends distributed by a PRC-resident enterprise to its immediate holding company outside the PRC (as a percent)       10.00%                    
PRC | ATA Testing                            
Income Taxes                            
Preferential tax rate as a high and new technology enterprise (as a percent)             15.00%       15.00%   15.00%  
PRC | ATA Testing | Future                            
Income Taxes                            
Statutory income tax rate (as a percent)   25.00%                        
Preferential tax rate as a high and new technology enterprise (as a percent)               15.00%            
PRC | ATA Learning                            
Income Taxes                            
Statutory income tax rate (as a percent)     25.00%                      
Preferential tax rate as a high and new technology enterprise (as a percent)                   15.00%   15.00%    
PRC | VIE                            
Income Taxes                            
Preferential tax rate as a high and new technology enterprise (as a percent)     15.00%             15.00%   15.00%    
PRC | VIE | Future                            
Income Taxes                            
Statutory income tax rate (as a percent) 25.00%                          
Preferential tax rate as a high and new technology enterprise (as a percent)                 15.00%          
PRC | Beijing JDX                            
Income Taxes                            
Statutory income tax rate (as a percent)     25.00%                      
Preferential tax rate as a high and new technology enterprise (as a percent)                   15.00%   15.00%    
PRC | Zhi Xing                            
Income Taxes                            
Statutory income tax rate (as a percent)       25.00%