Hello madam.

Your son should get 50% marks in KEAM to pass or 40% if you belong to ST/SC category. To get admission in a good college he should get good marks i.e., more than 60% (approx.). For example, to get a seat in Rajiv Gandhi Institute Of Technology, Kottayam (one of the top engineering colleges in Kerala), he needs to get 3861 rank for CSE, 5408 rank for EEE, etc.

For more details check here: https://www.careers360.com/colleges/rajiv-gandhi-institute-of-technology-kottayam/cut-off

Thank you.