Jccny wrote:
Yes. But keep in mind it isn't so much the agency working around you than it is the clients. If you start booking work and it starts to conflict with your classes you're gonna have to consider your options, skip class to make money (which is what you go to class to eventually do anyways), or pass up the opportunity and attend class.

Also, if you are getting a ton of work, I know plenty of models who put school on hold for a semester to try things out. It's all very doable and I wish he best of luck to you. (:

Pretty much this.

If they like your look enough to think they can make some money off you they'll give you a chance.  It's up to you to decide whether castings are more important than classes.  Obviously for a job you've landed that will pay a decent sum of money you'll probably do your best to work around missing a lecture....but to get said jobs you'll frequently have to go to castings that more often than not will be a waste of time.