The best course for interior design is diploma in interior designing.

Diploma in Interior Design is a 1 or 2 year long course depending on the university where candidates learn about various aspects of designing a House, office or interior of any place they desire. Interior Design is a skilled field in Interior sectors.

The eligibility criteria of candidates to apply in different colleges or universities are at least 55 % marks in the H.S.C examination in any stream from a recognised board. Admission to Diploma in Interior Design is offered on the marks scored in the entrance examination. The entrance examination is followed by a round of personal interview.In some cases admission is provided on the basis of marks scored in the qualifying examination.

Dear Pradeep,

Well , some of the top interior designing   courses after class 12th is as follows:

• Certificate/ diploma course
• B.A/ B.sc in Interior Design
• B.sc in Interior and Furniture
• Certificate in Computer aided interior design
• B.A interior Architecture and design and many more

To know more information (i.e. basic eligibility criteria or colleges that offers those above courses etc.)  , go through this link:

https://design.careers360.com/articles/interior-designing-courses-in-india

Hope this information helps !

Best wishes !!