Most kids will say they get way too much homework, and according to a study published in the American Journal of Family Therapy, they very well might be right.

According to a Rhode Island survey of 500 parents, young kids are doing a lot of homework—30 minutes in first grade—even though the National Education Association recommends first graders do 10 to 20 minutes of homework a night. Real-world kindergarteners are getting nearly as many homework assignments, being saddled with 25 minutes of homework nightly.

“In a period of life when children are focused on early stages of socialization and finessing motor skills, we anticipate that an overload of homework likely will interfere with a kindergarten-aged child’s ability to play and participate in extra-curricular activities,” the study says. (Time)