While graduate students are not assigned as much day-to-day homework as undergraduates, the concepts you learn are more advanced, and expectations are higher.
As a school counseling master’s degree student you are also entering a profession that requires intensive study, so you’ll want to budget about 15 hours a week to start. Give yourself more time when you have a big project or research paper due, especially when you have to turn it around on a tight schedule due to work or other commitments.