Answer :
I believe that you should start researching for colleges in the the 9th grade (freshman) so you could get an idea for what you are looking for, and begin apply for them in 10th (sophomore) so the colleges can do researches on you and see that you are really interested in them.
Answer:
Class 9th
Explanation:
A student should start their research from the 9th standard. These days students already made their mind on which field they want to go and they should start their research for their future. Students need to search on different websites and apply them so that the colleges can reach the students and the students can choose the best college from them.