I remember I had an online interview with two staff, and then had admin tasks after the interview on the same day, like using Microsoft excel and replying an email.

First a written case study - respond to the customer as a Kaplan's employee. Second mock phone call with one of Kaplan's senior employees who pretend to be a student calling to inquire about one of the preparation courses.

They hire from within first. They are big on referrals from employees. Interview style Casual / Basic. Group interview style. Each person asked a question. They you had to do a demonstration (teach something, convince them on something,etc. ) - you choose the topic.