sfu..........there is no need to take prep school lar...it's waste of time and money.... i took IBT prep school here 4 years before...i actually think i can do better by myself CD has enough materials that u need to suceed in GMAT... i listened to xdf 网络教程,so i think it's great materal for beginers like us to get started .....
good luck with your gmat on next friday... i gonna try the 1st time on Sep... still three months to go, but have schools finished at the mid of Aug, sooo...