The children were enjoying planting the trees and were quite enthusiastic, she said.
Riley Crabtree, 4, said he liked watering the trees and he thought they would look nice when they had grown.
Paper4trees national manager Hope Lawsen said passing the 5000 tree mark was an impressive effort from Rotorua schools.
"While these students have been earning and planting all those trees, they've made some big, impressively positive environmental impacts.
"Their recycling work has saved more than 10,500 cubic metres of landfill space."
Ms Lawsen said Rotorua's Four Winds Foundation and Rotorua Energy Charitable Trust had donated thousands of dollars to ensure schools could participate.
This year, schools are also receiving help from the Bin Inn Retail Group.
The company's administrator, Tim Beresford, travelled from Tauranga to help Rotorua kindy pupils plant their trees.
"We're so thrilled to see kids learning such important concepts so early," he said.
Paper4trees is in more than 4000 schools, including 92 per cent of Rotorua's primary, intermediate and high schools, and 75 per cent of preschools.