DOVER — For the 17th time, Charter School of Wilmington has taken home top honors in the annual Delaware Envirothon competition.

The school’s Team B won the 2016 Envirothon held Thursday at Brecknock Park in Camden, the Department of Natural Resources and Environmental Control announced Friday.

It marks the school’s 17th win in the event’s 20-year history, including an unbroken winning streak since 2002. Charter’s Team A finished second and Middletown High School placed third.

The 20 competing Envirothon teams answered questions, reviewed specimens and took measurements in topics dealing with aquatic ecology, soils/land-use, wildlife, forestry, air quality and the current environmental issue of invasive species. Teams also had to give a five- to seven-minute oral presentation on a scenario on effectively managing the invasive species emerald ash borer, which attacks and kills native ash tree species in Delaware.

After more than three hours of testing, Charter School of Wilmington Team B was crowned the 2016 state champion.

Each member of the winning team earned a $500 scholarship from the Delaware Envirothon, a $100 gift card and other prizes. The winning team also will receive an award plaque for the school. The second-, third- and fourth-place teams received more than $1,670 in special team awards and cash prizes.

The results were:

• First place: Charter School of Wilmington, Team B — Siddharth Gangrade, Allen Wang, Catherine Yu, Helen Xu and Connor Sweeney. Team advisers: Rose Lounsbury and Greg Darone

• Second place: Charter School of Wilmington, Team A — Gina Zhu, Janya Lennon, Silvana Alfieri, Alana Duke and Advaitha Anne. Team advisers Rose Lounsbury and Greg Darone

• Third place: Middletown High School, Delaware “BAES” Team — Brandon Dawson, Ariana Gaston, Erin Fogarty, Josh Housler and Will Nylander. Team adviser: Jeff Billings

• Fourth place: Polytech High School, Cotyledons — Matthiew Erickson, Marie Medina, Kyrstal Mendez, Amanda Phillips and Zackary Hardy. Team advisers: Susan Wujtewicz and Sally Bowman

• Fifth place: Delaware Military Academy, Seahawks 3 — Ava Rice, Tajaii Furrowh, Andrew Malone, Emily Harvie and Greg Fraczkowski. Team advisers: Paul Long and Tammy Averell

• Sixth place: Charter School of Wilmington, Team C — John Garcia, Maitreyi, Erin Warren, AJ Yuan and Ashley Pennington. Team advisers: Rose Lounsbury and Greg Darone)

• Seventh place: Polytech High School, FFA Team — Wyatt Olivarez, Racquel Crego, Mikayla Jacobsen, Nicole Woods and Krista Anderson. Team advisers: Sue Wujtewicz and Sally Bowman

For more information about the Delaware Envirothon, please visit www.delawareenvirothon.org or contact Rick Mickowski at (302) 832-3100, ext. 113.