Learning to work together is certainly an important skill, but there are endless ways teachers can incorporate that in their class while still evaluating each student individually. Plenty of DD’s teachers have done this successfully, either by having both students turn in their own lab reports after sharing the experiment, each turning in their own report after sharing the research - or by turning in a group project along with a card, unseen by teammates, upon which each student explained exactly how they contributed to the project, and what did the teammates contribute. If the answers didn’t match - look out.
There is very little connection to teams in the corporate world, which usually have assigned team leaders, team members have defined roles in a project based on skillset, they can complain to the boss or find a new job at any moment. In the classroom, it is usually expected that all team members are equal, they’re reluctant to complain to an often unsympathetic teacher, and they can’t leave or quit the project.
As others have pointed out, colleges don’t send acceptances to “teams”, AP tests aren’t taken socially, scholarships aren’t awarded to pairs/groups. Teach the skills necessary to play well with others, but evaluate individually.