Washington Montessori School will hold its fifth annual Polar Plunge for Partnership Dec. 4 at 11 a.m.

The family-friendly event, which is open to the public, will take place at Lake Waramaug State Park Beach.

It is a fundraiser for the school’s Community Partnership Program.

The event is open to children ages 6 and older.

The cost is $20 to plunge.

Participants will receive a commemorative T-shirt and snacks.

The WMSCCP provides middle school education to six graduates from the Children’s Community School in Waterbury each year.

The children who come to WMS have been identified as potential academic and social leaders within Waterbury.

They come from homes with limited financial resources.

The program has been in place since 2005, with both support and enthusiasm from the faculty and Board of Trustees at WMS.

The Polar Plunge for Partnership is presented by Washington Montessori School and an anonymous friend of WMSCPP.

Beluga Whale sponsors are Copes Waste Solutions, JRC Transportation, Karpas Strategies and MacDermid Inc.; Arctic Fox sponsor is Rational 360; Harp Seal sponsors are B&D Controlled Air Corp., Compass Capital Management, Dobson Pools, Fox Crossing Equestrian, The Hopkins Inn, Lakeville Interiors, Newcastle Homes, PBM, Trevenen & Coploff, LLC and Washington Health & Pharmacy.

“We are very much looking forward to another plunge,” said Head of School Pat Werner.

“It’s always such a fun event — and for such a great cause,” she said.

“Last year at least 150 people plunged, and we’re anticipating at least that many this year,” Werner said.

For more information and registration, visit www.takethepolarplunge.