Hey! If you want to give improvement exam after passing 12th last year, you need to apply through Bihar Board (BSEB). Improvement forms are released online on the official Bihar Board website. If your old college is not offering 12th anymore, don’t worry, you can still apply as a private candidate or through another recognized school. Just fill the form, pay the fee, and choose the subjects you want to improve. Keep checking Bihar Board official site for notification and dates