Hello there!
Build your resume in a simple manner that the recruiter/HR gets your point in a single line.
While mentioning your project work,
And, for the information about rankings, list all details of what that rank is about and if it's a contest / exam, mention what's the level (State/District/School level). Kindly mention your rankings and other contests under the heading 'Achievements'.
Hope this helps in your resume building!
Do well and good luck!
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