Hello,
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There are many of the best interior college all-around the world and India.
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Where do you want to persue your education.
Abroad or India?
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If abroad here are some of the best colleges,

• New York school of interior designing
• Cornell university,New York
• Pratt institute,New York
• Parsons school of design,New York
• Rhode island school of design
• Savannah school of art and design

If India here is the list of top colleges,

• CEPT University
• Shri Devi college of interior designing
• Sir JJ school of art, Mumbai
• Sai school of interior designing, new Delhi
• National institute of design, Delhi
• Vogue institute of fashion technology
• IILM school of design
• Arch academy of design

These are found to be top colleges all over India and abroad.Hope this was helpful.
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thank you