Pros
They do give raises, but there seems to be a cap. You can gain some experience in teaching/tutoring, marking, assessing and writing up reports, but you figure this out on your own. There is no formal training for this.
Cons
You are only paid for the hours you tutor. Sounds reasonable? Until you have to spend time preparing for classes, look for materials that are better suited for the students when the centre's grade curriculum doesn't match the student's individual needs, and writing up midterm and final progress reports, the hours and efforts put into this job doesn't match up with the pay. On top of that, depending on what subject you teach, they expect you to do tasks outside of class hours as well. The materials don't usually have answer keys. Sometimes the questions and exercises they give don't make sense and/or are riddled with grammatical errors. They obviously have taken some material from published workbooks, as demonstrated by the "do not photocopy" at the bottom of some of the worksheets. The centre claims to provide you teacher training, but honestly you just figure everything out on your own. There seems to be a high turnover rate. I have seen plenty of tutors come and go, probably because the pay doesn't match the expectations. They ask you to provide your availability, but then they ask you to take on classes that are outside of your availability. Of course, you can decline, but the fact that they ask makes me wonder what the point of asking in the first place was if they don't even adhere to it. Their website claims to offer such a variety of courses and classes, when in reality, they do not actually have professional trained tutors to provide the services they claim.