Parents of the 190 students are encouraged to drop their children off at the shelter, where they can either bike or walk to school on a safe pathway.
The children can wait away from the cold and wet weather inside the shelter for their parents after school.
The stretch of road from Kibblewhite Rd to the school is 80km/h.
"It's fantastic. It will reduce congestion and promote physical activity. It's nice and safe for them," she said.
Wairarapa Total Span manager Pat Fairhall said that through a charitable trust the company provided two new sheds annually somewhere in the country They cost around $3000 each.
Schools or community groups can apply for one to be developed in their area.
They helped promote road safety and keep children safe, Mr Fairhall said.