Class sizes have been around 10-15 a month, which I have been told is perfect for our training dept capacity. The May class was the first ERJ and Dash class for newhires. There are 5 erj slots for newhires classes. You bid your aircraft based on seniority in your newhires class (date of birth). I believe the company is transitioning 2 FO's a month from the dash and 7 Capt from the dash. That makes a erj class 14 with 7 Capt and 7 fo. So if a newhires wants IAD, best thing to do is bid for the erj since it is currently only IAD based.