Dear rounak ,

Im sorry to say that there is no way to direct admission in Polytechnic Government college or any kind of college .For taking admission in any college you must clear 10th from any recognized board then after form fill up online or offline based in your interested college .

For my suggest now you start your joining process in school and clear your 8,9 and 10th class with in 3 days then after you will able to join in college .

I hope you will understand and best of luck for your exam.

Thanks