FTC was created for students in 7th to 12th grade. In first you have 10 weeks to build a functioning robot while writing your progress in your engineering work book. While also having your robot adhere to the challenge of that year where our challenge Is power play. Which is a competition consisting of Multiple robots playing on a field by Gaining points by playing objectives, Which are usually different technical challenges for your Robot to conquer or score a certain number of points to defeat the competition. FTC is a skill based competition which varies on the skill of your team and how well they perform together and there abilities as individuals.
If you want to know more these are the official FTC websites.