Tutoring is done 3:1, with a random mix of students. Tutors are supposed to multi-task among the three students, which means that students actually only get 1/3rd of the tutoring they would get at another company. My manager was also micro-managed the choice of curriculum, even though she has no teaching experience. Her advice was sometimes horribly wrong for the student, but I had to follow it because she didn't actually take the time to listen when I advocated for the student. And then I would get in trouble when the students didn't improve their test scores... All in all, it has been a very frustrating experience.
There was also a significant amount of unpaid work. We were expected to be at work at least 30 minutes before classes started, but most of us arrived an hour or more beforehand just so that we could plan lessons and make photocopies. None of this was paid time.
Finally, there was an incredible amount of turnover (despite claims on their website that boast that C2 has far higher teacher longevity than their competition). Within an 8 month period, every single English teacher left and was replaced. Some of the replacements left too. The most veteran math tutor had only been there for a year and a half.