In the IT world there are many different opportunities but most programmers starting out make over $65,000 a year, with a 4 year degree it's even higher starting.
As for evaluation, a good manager will give you feedback through out the year to make sure you have what you need, are doing the work and are growing in your skills. There is usually a formal review once a year. One thing that is important to learn is constructive criticism is good, learn from the advice of you coworkers and manager or supervisor. They are attempting to help you.