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New Trier Township High School District 203

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Business Services

The Business Office is responsible for the following functions: Payroll, Accounting and Financial Reporting, Accounts Payable, Purchasing and Student Fees.  Please see our list of staff members and contact information below.

Office Hours: 7:00 a.m. to 4:00 p.m. Monday – Friday
Office Location: Northfield Campus Room A406

School Year General Inquiries:  847.784.2674
Summer General Inquires:  847.784.2661
Fax: 847.446.0875

Please email Jill Mercuri at mercurij@nths.net for all RevTrak requests.

Salary Verification Inquiries please follow directions to Verifent.

General Education Student Transportation 2026-2029

Contact Information

Myron Spiwak

Director of Business Services
Northfield
Business Services

Yvonne Blair

Accounts Payable
Northfield
Business Services

Shelly Fowler

Business Office Associate
Northfield
Business Services

Frank Lamberti

Transportation and Purchasin-2
Northfield
Business Services

Jillian Mercuri

Comptroller
Northfield
Business Services

Brooke Porembski

Payroll Manager
Northfield
Business Services

Emm Schlauch

Asst Payroll Manager
Northfield
Business Services