A group of Brooklyn elementary school students got a lesson in agriculture this week, harvesting vegetables in a field at the end of Long Island.

“We looove carrots,” a second-grader, Theresa Serra, said, as her classmates munched on vegetables. Showing off the two bushels she was struggling to carry, she said, “My grandma really doesn’t like to waste money, so these are for her.”

The students had just made the two-hour journey from Red Hook, where they attend P.S. 27. The school has teamed up with a nonprofit group that takes classes to sites across the New York area, a resource for educators who say they do not have the time to organize such trips.

“This is so different for them,” one of the teachers from P.S. 27, Debra Argenziano, said. “Some of these kids never leave Red Hook.”

The class toured two farms in Eastern Long Island, picking vegetables and milking goats. The activity was part of a unit on how food is produced, but for the students, its greatest value was exposure to a world that most had only read about.

“It’s much better here,” one of the 40-odd students on the trip, Jaime Coyomami, said. “In Brooklyn, it’s dirty, and there’s a lot of gray.”

The nonprofit, Into the Outside, has partnered with three Brooklyn schools in the five years since its founding. It often enlists the help of community groups and corporations — in Tuesday’s case, FreshDirect. In addition to recruiting farm owners, FreshDirect sent experts to Red Hook earlier this year to give lessons about agriculture.

Corporate sponsors are becoming an increasingly useful resource for teachers who are too swamped with standardized test preparation and budget constraints to organize trips themselves, the executive director of Into the Outside, Robyn Steinhause, said.

“People in general are recognizing that education is in a bad place in many ways,” she said. “The more that companies understand that it is all our responsibility, the more they hopefully will be calling our organization and asking, ‘Hey, how can we help out?'”

Another teacher at P.S. 27, Bridgitte Buissereth, said her school’s emphasis on taking children outside their neighborhood would not be possible without help.”Can you imagine dropping teaching to contact a farmer and coordinate this?” Ms. Buissereth asked, watching her students tear through a vegetable row.

The school’s second-graders, several of whom are special needs students, also have made visits to the New York Botanical Garden, an urban farm in Red Hook, and a farmer’s market in Union Square. At the Long Island farm, they said their favorite activity was milking the goats.