I took the Full Veritas Gmat Course with Mark Porath in Los Angeles between Feb and July 2015. I strongly recommend this course because it is well divided into sections according to Gmat and allows you to refresh and review quant and verbal skills. Mark was a really good teacher and he explained the quant and verbal sections in some easy ways that anyone can get right the question in the proper time. I loved the way he explains rates… I always get those problems right!!
Mark was paying attention to our progress and he was very compromised to help us get a high score.