Whether it is a permitted study leave, or whether you have informed such reasons in your application, whether it is loss of pay etc., are facts to be considered. Ask your friend or relative to file RTI Application to State Public Information officer and seek information as follows:
1.Please provide the copy of orders/directives in treating the leave period for education, for consideration of seniority in service.
(EX: After one year from date of joining 1-1-16 the employee went on study leave for one year . The employee completed 2 years of service at par with other recruited in the same batch of 10 . Whether this study leave /loss of pay for one year can be considered as in service or he becomes junior to those nine other employees who joined the service on 1-1-16. The rules and regulations that state considering such study leave)